66600457 has 36 divisors (see below), whose sum is σ = 87333120. Its totient is φ = 50579760.

The previous prime is 66600449. The next prime is 66600461. The reversal of 66600457 is 75400666.

It is not a de Polignac number, because 66600457 - 2³ = 66600449 is a prime.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (66610457) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 278544 + ... + 278782.

It is an arithmetic number, because the mean of its divisors is an integer number (2425920).

Almost surely, 2^66600457 is an apocalyptic number.

It is an amenable number.

66600457 is a deficient number, since it is larger than the sum of its proper divisors (20732663).

66600457 is a wasteful number, since it uses less digits than its factorization.

66600457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322 (or 304 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 66600457 is about 8160.9103046168. The cubic root of 66600457 is about 405.3458550537.

The spelling of 66600457 in words is "sixty-six million, six hundred thousand, four hundred fifty-seven".