64466623 has 16 divisors (see below), whose sum is σ = 72182880. Its totient is φ = 57165696.

The previous prime is 64466609. The next prime is 64466629. The reversal of 64466623 is 32666446.

It is a cyclic number.

It is not a de Polignac number, because 64466623 - 2²⁵ = 30912191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64466629) 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, 115461 + ... + 116017.

It is an arithmetic number, because the mean of its divisors is an integer number (4511430).

Almost surely, 2^64466623 is an apocalyptic number.

64466623 is a deficient number, since it is larger than the sum of its proper divisors (7716257).

64466623 is a wasteful number, since it uses less digits than its factorization.

64466623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 906.

The product of its digits is 124416, while the sum is 37.

The square root of 64466623 is about 8029.1109719570. The cubic root of 64466623 is about 400.9697781756.

The spelling of 64466623 in words is "sixty-four million, four hundred sixty-six thousand, six hundred twenty-three".