76690388 has 24 divisors (see below), whose sum is σ = 136055808. Its totient is φ = 37821056.

The previous prime is 76690387. The next prime is 76690391. The reversal of 76690388 is 88309667.

It is a super-2 number, since 2×76690388² = 11762831223181088, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76690387) 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, 172895 + ... + 173337.

It is an arithmetic number, because the mean of its divisors is an integer number (5668992).

Almost surely, 2^76690388 is an apocalyptic number.

It is an amenable number.

76690388 is a deficient number, since it is larger than the sum of its proper divisors (59365420).

76690388 is a wasteful number, since it uses less digits than its factorization.

76690388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 943 (or 941 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 47.

The square root of 76690388 is about 8757.3048365350. The cubic root of 76690388 is about 424.8611089403.

The spelling of 76690388 in words is "seventy-six million, six hundred ninety thousand, three hundred eighty-eight".