66907614 has 32 divisors (see below), whose sum is σ = 142037280. Its totient is φ = 20938752.

The previous prime is 66907609. The next prime is 66907627. The reversal of 66907614 is 41670966.

It is a super-2 number, since 2×66907614² = 8953257622345992, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78012 + ... + 78864.

It is an arithmetic number, because the mean of its divisors is an integer number (4438665).

Almost surely, 2^66907614 is an apocalyptic number.

66907614 is an abundant number, since it is smaller than the sum of its proper divisors (75129666).

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

66907614 is a wasteful number, since it uses less digits than its factorization.

66907614 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1644.

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 66907614 is about 8179.7074519814. The cubic root of 66907614 is about 405.9680424909.

The spelling of 66907614 in words is "sixty-six million, nine hundred seven thousand, six hundred fourteen".