76405685 has 8 divisors (see below), whose sum is σ = 91770840. Its totient is φ = 61068544.

The previous prime is 76405663. The next prime is 76405687. The reversal of 76405685 is 58650467.

It can be written as a sum of positive squares in 4 ways, for example, as 4104676 + 72301009 = 2026^2 + 8503^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76405685 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76405687) 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, 440 + ... + 12369.

It is an arithmetic number, because the mean of its divisors is an integer number (11471355).

Almost surely, 2^76405685 is an apocalyptic number.

It is an amenable number.

76405685 is a deficient number, since it is larger than the sum of its proper divisors (15365155).

76405685 is a wasteful number, since it uses less digits than its factorization.

76405685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14007.

The product of its (nonzero) digits is 201600, while the sum is 41.

The square root of 76405685 is about 8741.0345497544. The cubic root of 76405685 is about 424.3347099712.

The spelling of 76405685 in words is "seventy-six million, four hundred five thousand, six hundred eighty-five".