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61096681 = 144742223
BaseRepresentation
bin1110100100010…
…0001011101001
311020222000220001
43221010023221
5111120043211
610021303001
71341212302
oct351041351
9136860801
1061096681
113153a928
1218564a61
13c8721a9
1481857a9
15556cac1
hex3a442e9

61096681 has 4 divisors (see below), whose sum is σ = 61140352. Its totient is φ = 61053012.

The previous prime is 61096643. The next prime is 61096699. The reversal of 61096681 is 18669016.

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.

It is a cyclic number.

It is not a de Polignac number, because 61096681 - 217 = 60965609 is a prime.

It is a super-2 number, since 2×610966812 = 7465608858431522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61096681.

It is not an unprimeable number, because it can be changed into a prime (61096621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19665 + ... + 22558.

It is an arithmetic number, because the mean of its divisors is an integer number (15285088).

Almost surely, 261096681 is an apocalyptic number.

It is an amenable number.

61096681 is a deficient number, since it is larger than the sum of its proper divisors (43671).

61096681 is a wasteful number, since it uses less digits than its factorization.

61096681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43670.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 61096681 is about 7816.4365922075. The cubic root of 61096681 is about 393.8575781976.

The spelling of 61096681 in words is "sixty-one million, ninety-six thousand, six hundred eighty-one".

Divisors: 1 1447 42223 61096681