77976370 has 16 divisors (see below), whose sum is σ = 140908248. Its totient is φ = 31068160.

The previous prime is 77976341. The next prime is 77976373. The reversal of 77976370 is 7367977.

It can be written as a sum of positive squares in 4 ways, for example, as 70375321 + 7601049 = 8389^2 + 2757^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 77976370.

It is not an unprimeable number, because it can be changed into a prime (77976373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12601 + ... + 17740.

Almost surely, 2^77976370 is an apocalyptic number.

77976370 is a deficient number, since it is larger than the sum of its proper divisors (62931878).

77976370 is a wasteful number, since it uses less digits than its factorization.

77976370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30605.

The product of its (nonzero) digits is 388962, while the sum is 46.

The square root of 77976370 is about 8830.4229796766. The cubic root of 77976370 is about 427.2227172630. Note that the first 3 decimals are identical.

The spelling of 77976370 in words is "seventy-seven million, nine hundred seventy-six thousand, three hundred seventy".