76740664 has 144 divisors (see below), whose sum is σ = 202101480. Its totient is φ = 26853120.

The previous prime is 76740659. The next prime is 76740683. The reversal of 76740664 is 46604767.

It is a super-2 number, since 2×76740664² = 11778259022321792, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2074054 + ... + 2074090.

Almost surely, 2^76740664 is an apocalyptic number.

76740664 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 76740664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101050740).

76740664 is an abundant number, since it is smaller than the sum of its proper divisors (125360816).

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

76740664 is a wasteful number, since it uses less digits than its factorization.

76740664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118 (or 70 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 40.

The square root of 76740664 is about 8760.1748840991. The cubic root of 76740664 is about 424.9539308772.

The spelling of 76740664 in words is "seventy-six million, seven hundred forty thousand, six hundred sixty-four".