77685001 has 8 divisors (see below), whose sum is σ = 78249600. Its totient is φ = 77123040.

The previous prime is 77684993. The next prime is 77685077. The reversal of 77685001 is 10058677.

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 77685001 - 2³ = 77684993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77685301) 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, 136245 + ... + 136813.

It is an arithmetic number, because the mean of its divisors is an integer number (9781200).

Almost surely, 2^77685001 is an apocalyptic number.

It is an amenable number.

77685001 is a deficient number, since it is larger than the sum of its proper divisors (564599).

77685001 is a wasteful number, since it uses less digits than its factorization.

77685001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1319.

The product of its (nonzero) digits is 11760, while the sum is 34.

The square root of 77685001 is about 8813.9095184827. The cubic root of 77685001 is about 426.6899284057.

It can be divided in two parts, 7768 and 5001, that added together give a square (12769 = 113²).

The spelling of 77685001 in words is "seventy-seven million, six hundred eighty-five thousand, one".