66907682 has 16 divisors (see below), whose sum is σ = 106831872. Its totient is φ = 31318080.

The previous prime is 66907657. The next prime is 66907691. The reversal of 66907682 is 28670966.

It is a super-2 number, since 2×66907682² = 8953275821226248, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1343 + ... + 11645.

It is an arithmetic number, because the mean of its divisors is an integer number (6676992).

Almost surely, 2^66907682 is an apocalyptic number.

66907682 is a deficient number, since it is larger than the sum of its proper divisors (39924190).

66907682 is a wasteful number, since it uses less digits than its factorization.

66907682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10513.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 66907682 is about 8179.7116086082. The cubic root of 66907682 is about 405.9681800230.

The spelling of 66907682 in words is "sixty-six million, nine hundred seven thousand, six hundred eighty-two".