774721216 has 14 divisors (see below), whose sum is σ = 1537337540. Its totient is φ = 387360576.

The previous prime is 774721169. The next prime is 774721223. The reversal of 774721216 is 612127477.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6052446 + ... + 6052573.

Almost surely, 2^774721216 is an apocalyptic number.

It is an amenable number.

774721216 is a deficient number, since it is larger than the sum of its proper divisors (762616324).

774721216 is a wasteful number, since it uses less digits than its factorization.

774721216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12105031 (or 12105021 counting only the distinct ones).

The product of its digits is 32928, while the sum is 37.

The square root of 774721216 is about 27833.8142553262. The cubic root of 774721216 is about 918.4351217007.

The spelling of 774721216 in words is "seven hundred seventy-four million, seven hundred twenty-one thousand, two hundred sixteen".