66700416 has 32 divisors (see below), whose sum is σ = 177174000. Its totient is φ = 22233344.

The previous prime is 66700373. The next prime is 66700421. The reversal of 66700416 is 61400766.

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86466 + ... + 87233.

Almost surely, 2^66700416 is an apocalyptic number.

It is an amenable number.

66700416 is an abundant number, since it is smaller than the sum of its proper divisors (110473584).

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

66700416 is a wasteful number, since it uses less digits than its factorization.

66700416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173716 (or 173704 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 66700416 is about 8167.0322639255. The cubic root of 66700416 is about 405.5485449161.

The spelling of 66700416 in words is "sixty-six million, seven hundred thousand, four hundred sixteen".