66904014 has 32 divisors (see below), whose sum is σ = 138829824. Its totient is φ = 21471840.

The previous prime is 66904003. The next prime is 66904031. The reversal of 66904014 is 41040966.

It is a super-2 number, since 2×66904014² = 8952294178624392, 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, 40672 + ... + 42284.

It is an arithmetic number, because the mean of its divisors is an integer number (4338432).

Almost surely, 2^66904014 is an apocalyptic number.

66904014 is an abundant number, since it is smaller than the sum of its proper divisors (71925810).

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

66904014 is a wasteful number, since it uses less digits than its factorization.

66904014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1872.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 66904014 is about 8179.4873922514. The cubic root of 66904014 is about 405.9607612510.

The spelling of 66904014 in words is "sixty-six million, nine hundred four thousand, fourteen".