66290692 has 48 divisors (see below), whose sum is σ = 133499520. Its totient is φ = 28562688.

The previous prime is 66290687. The next prime is 66290729. The reversal of 66290692 is 29609266.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50784 + ... + 52072.

It is an arithmetic number, because the mean of its divisors is an integer number (2781240).

Almost surely, 2^66290692 is an apocalyptic number.

It is an amenable number.

66290692 is an abundant number, since it is smaller than the sum of its proper divisors (67208828).

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

66290692 is a wasteful number, since it uses less digits than its factorization.

66290692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1372 (or 1370 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 40.

The square root of 66290692 is about 8141.9096040180. The cubic root of 66290692 is about 404.7164443065.

The spelling of 66290692 in words is "sixty-six million, two hundred ninety thousand, six hundred ninety-two".