77641612 has 6 divisors (see below), whose sum is σ = 135872828. Its totient is φ = 38820804.

The previous prime is 77641609. The next prime is 77641621. The reversal of 77641612 is 21614677.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9705198 + ... + 9705205.

Almost surely, 2^77641612 is an apocalyptic number.

It is an amenable number.

77641612 is a deficient number, since it is larger than the sum of its proper divisors (58231216).

77641612 is a wasteful number, since it uses less digits than its factorization.

77641612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19410407 (or 19410405 counting only the distinct ones).

The product of its digits is 14112, while the sum is 34.

The square root of 77641612 is about 8811.4477811538. The cubic root of 77641612 is about 426.6104746419.

The spelling of 77641612 in words is "seventy-seven million, six hundred forty-one thousand, six hundred twelve".