61707772 has 12 divisors (see below), whose sum is σ = 123415600. Its totient is φ = 26446176.

The previous prime is 61707743. The next prime is 61707797. The reversal of 61707772 is 27770716.

61707772 is an admirable number.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1101897 + ... + 1101952.

Almost surely, 2^61707772 is an apocalyptic number.

It is an amenable number.

61707772 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61707772 is a wasteful number, since it uses less digits than its factorization.

61707772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2203860 (or 2203858 counting only the distinct ones).

The product of its (nonzero) digits is 28812, while the sum is 37.

The square root of 61707772 is about 7855.4294599341. The cubic root of 61707772 is about 395.1663498451.

The spelling of 61707772 in words is "sixty-one million, seven hundred seven thousand, seven hundred seventy-two".