76609940 has 36 divisors (see below), whose sum is σ = 176841588. Its totient is φ = 27857280.

The previous prime is 76609933. The next prime is 76609991. The reversal of 76609940 is 4990667.

It can be written as a sum of positive squares in 2 ways, for example, as 32467204 + 44142736 = 5698^2 + 6644^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13409 + ... + 18248.

Almost surely, 2^76609940 is an apocalyptic number.

It is an amenable number.

76609940 is an abundant number, since it is smaller than the sum of its proper divisors (100231648).

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

76609940 is a wasteful number, since it uses less digits than its factorization.

76609940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31688 (or 31675 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 76609940 is about 8752.7104373445. The cubic root of 76609940 is about 424.7124975968.

It can be divided in two parts, 76 and 609940, that added together give a palindrome (610016).

The spelling of 76609940 in words is "seventy-six million, six hundred nine thousand, nine hundred forty".