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61122685 = 513940349
BaseRepresentation
bin1110100100101…
…0100001111101
311021000100120011
43221022201331
5111121411220
610022023221
71341351151
oct351124175
9137010504
1061122685
1131558418
1218577b11
13c880c90
148191061
15557565a
hex3a4a87d

61122685 has 8 divisors (see below), whose sum is σ = 78989400. Its totient is φ = 45136704.

The previous prime is 61122683. The next prime is 61122689. The reversal of 61122685 is 58622116.

It can be written as a sum of positive squares in 4 ways, for example, as 329476 + 60793209 = 574^2 + 7797^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61122685 - 21 = 61122683 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61122683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 470110 + ... + 470239.

It is an arithmetic number, because the mean of its divisors is an integer number (9873675).

Almost surely, 261122685 is an apocalyptic number.

61122685 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

61122685 is a deficient number, since it is larger than the sum of its proper divisors (17866715).

61122685 is a wasteful number, since it uses less digits than its factorization.

61122685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 940367.

The product of its digits is 5760, while the sum is 31.

The square root of 61122685 is about 7818.0998330796. The cubic root of 61122685 is about 393.9134482252.

The spelling of 61122685 in words is "sixty-one million, one hundred twenty-two thousand, six hundred eighty-five".

Divisors: 1 5 13 65 940349 4701745 12224537 61122685