64266623 has 6 divisors (see below), whose sum is σ = 67182864. Its totient is φ = 61471916.

The previous prime is 64266617. The next prime is 64266637. The reversal of 64266623 is 32666246.

It is not a de Polignac number, because 64266623 - 2¹⁰ = 64265599 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 (64266673) 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, 60215 + ... + 61272.

It is an arithmetic number, because the mean of its divisors is an integer number (11197144).

Almost surely, 2^64266623 is an apocalyptic number.

64266623 is a deficient number, since it is larger than the sum of its proper divisors (2916241).

64266623 is a wasteful number, since it uses less digits than its factorization.

64266623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121533 (or 121510 counting only the distinct ones).

The product of its digits is 62208, while the sum is 35.

The square root of 64266623 is about 8016.6466181315. The cubic root of 64266623 is about 400.5546950114.

The spelling of 64266623 in words is "sixty-four million, two hundred sixty-six thousand, six hundred twenty-three".