66955023 has 12 divisors (see below), whose sum is σ = 96800808. Its totient is φ = 44596080.

The previous prime is 66955019. The next prime is 66955039. The reversal of 66955023 is 32055966.

66955023 is a `hidden beast` number, since 66 + 95 + 502 + 3 = 666.

It is not a de Polignac number, because 66955023 - 2² = 66955019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66955723) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9736 + ... + 15122.

It is an arithmetic number, because the mean of its divisors is an integer number (8066734).

Almost surely, 2^66955023 is an apocalyptic number.

66955023 is a deficient number, since it is larger than the sum of its proper divisors (29845785).

66955023 is a wasteful number, since it uses less digits than its factorization.

66955023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6774 (or 6771 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 36.

The square root of 66955023 is about 8182.6049030856. The cubic root of 66955023 is about 406.0639059944.

The spelling of 66955023 in words is "sixty-six million, nine hundred fifty-five thousand, twenty-three".