72771608 has 32 divisors (see below), whose sum is σ = 167936160. Its totient is φ = 28788480.

The previous prime is 72771607. The next prime is 72771613. The reversal of 72771608 is 80617727.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72771607) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49253 + ... + 50708.

It is an arithmetic number, because the mean of its divisors is an integer number (5248005).

Almost surely, 2^72771608 is an apocalyptic number.

It is an amenable number.

72771608 is an abundant number, since it is smaller than the sum of its proper divisors (95164552).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72771608 is a wasteful number, since it uses less digits than its factorization.

72771608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99987 (or 99983 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 38.

The square root of 72771608 is about 8530.6276439662. The cubic root of 72771608 is about 417.4976069281.

The spelling of 72771608 in words is "seventy-two million, seven hundred seventy-one thousand, six hundred eight".