77130712 has 16 divisors (see below), whose sum is σ = 145086840. Its totient is φ = 38440896.

The previous prime is 77130701. The next prime is 77130727. The reversal of 77130712 is 21703177.

It is a congruent number.

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, 12898 + ... + 17905.

Almost surely, 2^77130712 is an apocalyptic number.

It is an amenable number.

77130712 is a deficient number, since it is larger than the sum of its proper divisors (67956128).

77130712 is a wasteful number, since it uses less digits than its factorization.

77130712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31122 (or 31118 counting only the distinct ones).

The product of its (nonzero) digits is 2058, while the sum is 28.

The square root of 77130712 is about 8782.4092366503. The cubic root of 77130712 is about 425.6726823642.

Adding to 77130712 its reverse (21703177), we get a palindrome (98833889).

The spelling of 77130712 in words is "seventy-seven million, one hundred thirty thousand, seven hundred twelve".