66957063 has 16 divisors (see below), whose sum is σ = 92311296. Its totient is φ = 43142400.

The previous prime is 66957061. The next prime is 66957097. The reversal of 66957063 is 36075966.

It is not a de Polignac number, because 66957063 - 2¹ = 66957061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66957061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9838 + ... + 15188.

It is an arithmetic number, because the mean of its divisors is an integer number (5769456).

Almost surely, 2^66957063 is an apocalyptic number.

66957063 is a deficient number, since it is larger than the sum of its proper divisors (25354233).

66957063 is a wasteful number, since it uses less digits than its factorization.

66957063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5494.

The product of its (nonzero) digits is 204120, while the sum is 42.

The square root of 66957063 is about 8182.7295568166. The cubic root of 66957063 is about 406.0680299665.

The spelling of 66957063 in words is "sixty-six million, nine hundred fifty-seven thousand, sixty-three".