76669686 has 16 divisors (see below), whose sum is σ = 170377200. Its totient is φ = 25556544.

The previous prime is 76669679. The next prime is 76669687. The reversal of 76669686 is 68696667.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 1419809 = 76669686 / (7 + 6 + 6 + 6 + 9 + 6 + 8 + 6).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76669687) 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, 709851 + ... + 709958.

It is an arithmetic number, because the mean of its divisors is an integer number (10648575).

Almost surely, 2^76669686 is an apocalyptic number.

76669686 is an abundant number, since it is smaller than the sum of its proper divisors (93707514).

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

76669686 is a wasteful number, since it uses less digits than its factorization.

76669686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1419820 (or 1419814 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 54.

The square root of 76669686 is about 8756.1227720950. The cubic root of 76669686 is about 424.8228761341.

The spelling of 76669686 in words is "seventy-six million, six hundred sixty-nine thousand, six hundred eighty-six".