77261612 has 12 divisors (see below), whose sum is σ = 136727640. Its totient is φ = 38196576.

The previous prime is 77261609. The next prime is 77261647. The reversal of 77261612 is 21616277.

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, 108158 + ... + 108869.

It is an arithmetic number, because the mean of its divisors is an integer number (11393970).

Almost surely, 2^77261612 is an apocalyptic number.

It is an amenable number.

77261612 is a deficient number, since it is larger than the sum of its proper divisors (59466028).

77261612 is a wasteful number, since it uses less digits than its factorization.

77261612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217120 (or 217118 counting only the distinct ones).

The product of its digits is 7056, while the sum is 32.

The square root of 77261612 is about 8789.8584744011. The cubic root of 77261612 is about 425.9133520054.

Adding to 77261612 its reverse (21616277), we get a palindrome (98877889).

The spelling of 77261612 in words is "seventy-seven million, two hundred sixty-one thousand, six hundred twelve".