66164463 has 6 divisors (see below), whose sum is σ = 95570904. Its totient is φ = 44109636.

The previous prime is 66164437. The next prime is 66164489. The reversal of 66164463 is 36446166.

66164463 is a `hidden beast` number, since 6 + 6 + 1 + 644 + 6 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (66164437) and next prime (66164489).

It is not a de Polignac number, because 66164463 - 2⁵ = 66164431 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66164963) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3675795 + ... + 3675812.

It is an arithmetic number, because the mean of its divisors is an integer number (15928484).

Almost surely, 2^66164463 is an apocalyptic number.

66164463 is a deficient number, since it is larger than the sum of its proper divisors (29406441).

66164463 is a wasteful number, since it uses less digits than its factorization.

66164463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7351613 (or 7351610 counting only the distinct ones).

The product of its digits is 62208, while the sum is 36.

The square root of 66164463 is about 8134.1541047610. The cubic root of 66164463 is about 404.4593975981.

The spelling of 66164463 in words is "sixty-six million, one hundred sixty-four thousand, four hundred sixty-three".