71764608 has 64 divisors (see below), whose sum is σ = 195815520. Its totient is φ = 23270400.

The previous prime is 71764603. The next prime is 71764613. The reversal of 71764608 is 80646717.

It is an interprime number because it is at equal distance from previous prime (71764603) and next prime (71764613).

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×71764608² = 10300317922787328, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71764601) 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, 11683 + ... + 16733.

Almost surely, 2^71764608 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71764608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97907760).

71764608 is an abundant number, since it is smaller than the sum of its proper divisors (124050912).

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

71764608 is a wasteful number, since it uses less digits than its factorization.

71764608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5105 (or 5093 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 39.

The square root of 71764608 is about 8471.3994121396. The cubic root of 71764608 is about 415.5629038178.

The spelling of 71764608 in words is "seventy-one million, seven hundred sixty-four thousand, six hundred eight".