77670057 has 8 divisors (see below), whose sum is σ = 108062784. Its totient is φ = 49528688.

The previous prime is 77670053. The next prime is 77670101. The reversal of 77670057 is 75007677.

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 77670057 - 2² = 77670053 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 77669997 and 77670024.

It is not an unprimeable number, because it can be changed into a prime (77670053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 562758 + ... + 562895.

It is an arithmetic number, because the mean of its divisors is an integer number (13507848).

Almost surely, 2^77670057 is an apocalyptic number.

It is an amenable number.

77670057 is a deficient number, since it is larger than the sum of its proper divisors (30392727).

77670057 is a wasteful number, since it uses less digits than its factorization.

77670057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1125679.

The product of its (nonzero) digits is 72030, while the sum is 39.

The square root of 77670057 is about 8813.0617267780. The cubic root of 77670057 is about 426.6625663533.

The spelling of 77670057 in words is "seventy-seven million, six hundred seventy thousand, fifty-seven".