76840680 has 128 divisors (see below), whose sum is σ = 279002880. Its totient is φ = 16527360.

The previous prime is 76840679. The next prime is 76840703. The reversal of 76840680 is 8604867.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11590 + ... + 16970.

It is an arithmetic number, because the mean of its divisors is an integer number (2179710).

Almost surely, 2^76840680 is an apocalyptic number.

76840680 is a gapful number since it is divisible by the number (70) 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 76840680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139501440).

76840680 is an abundant number, since it is smaller than the sum of its proper divisors (202162200).

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

76840680 is a wasteful number, since it uses less digits than its factorization.

76840680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5419 (or 5415 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 76840680 is about 8765.8815871537. The cubic root of 76840680 is about 425.1384646873.

The spelling of 76840680 in words is "seventy-six million, eight hundred forty thousand, six hundred eighty".