66914684 has 6 divisors (see below), whose sum is σ = 117100704. Its totient is φ = 33457340.

The previous prime is 66914677. The next prime is 66914693. The reversal of 66914684 is 48641966.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8364332 + ... + 8364339.

It is an arithmetic number, because the mean of its divisors is an integer number (19516784).

Almost surely, 2^66914684 is an apocalyptic number.

It is an amenable number.

66914684 is a deficient number, since it is larger than the sum of its proper divisors (50186020).

66914684 is a wasteful number, since it uses less digits than its factorization.

66914684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16728675 (or 16728673 counting only the distinct ones).

The product of its digits is 248832, while the sum is 44.

The square root of 66914684 is about 8180.1396076106. The cubic root of 66914684 is about 405.9823412770.

The spelling of 66914684 in words is "sixty-six million, nine hundred fourteen thousand, six hundred eighty-four".