76618840 has 16 divisors (see below), whose sum is σ = 172392480. Its totient is φ = 30647520.

The previous prime is 76618799. The next prime is 76618853. The reversal of 76618840 is 4881667.

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 1915471 = 76618840 / (7 + 6 + 6 + 1 + 8 + 8 + 4 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 76618793 and 76618802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 957696 + ... + 957775.

It is an arithmetic number, because the mean of its divisors is an integer number (10774530).

Almost surely, 2^76618840 is an apocalyptic number.

It is an amenable number.

76618840 is an abundant number, since it is smaller than the sum of its proper divisors (95773640).

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

76618840 is a wasteful number, since it uses less digits than its factorization.

76618840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1915482 (or 1915478 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 76618840 is about 8753.2188365195. The cubic root of 76618840 is about 424.7289436562.

The spelling of 76618840 in words is "seventy-six million, six hundred eighteen thousand, eight hundred forty".