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136858061 = 1063128747
BaseRepresentation
bin10000010100001…
…00100111001101
3100112112002222002
420022010213031
5240013424221
621325202045
73251163044
oct1012044715
9315462862
10136858061
117028653a
1239a00325
132247a202
141426755b
15c03580b
hex82849cd

136858061 has 4 divisors (see below), whose sum is σ = 136987872. Its totient is φ = 136728252.

The previous prime is 136858039. The next prime is 136858069. The reversal of 136858061 is 160858631.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 160858631 = 273158901.

It is a cyclic number.

It is not a de Polignac number, because 136858061 - 26 = 136857997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136858069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63311 + ... + 65436.

It is an arithmetic number, because the mean of its divisors is an integer number (34246968).

Almost surely, 2136858061 is an apocalyptic number.

It is an amenable number.

136858061 is a deficient number, since it is larger than the sum of its proper divisors (129811).

136858061 is a wasteful number, since it uses less digits than its factorization.

136858061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129810.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 136858061 is about 11698.6350058458. The cubic root of 136858061 is about 515.3355791932.

The spelling of 136858061 in words is "one hundred thirty-six million, eight hundred fifty-eight thousand, sixty-one".

Divisors: 1 1063 128747 136858061