77664130 has 8 divisors (see below), whose sum is σ = 139795452. Its totient is φ = 31065648.

The previous prime is 77664113. The next prime is 77664151. The reversal of 77664130 is 3146677.

It can be written as a sum of positive squares in 2 ways, for example, as 70107129 + 7557001 = 8373^2 + 2749^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3883197 + ... + 3883216.

Almost surely, 2^77664130 is an apocalyptic number.

77664130 is a deficient number, since it is larger than the sum of its proper divisors (62131322).

77664130 is a wasteful number, since it uses less digits than its factorization.

77664130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7766420.

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 77664130 is about 8812.7254581089. The cubic root of 77664130 is about 426.6517132075.

The spelling of 77664130 in words is "seventy-seven million, six hundred sixty-four thousand, one hundred thirty".