64164263 has 4 divisors (see below), whose sum is σ = 64313568. Its totient is φ = 64014960.

The previous prime is 64164257. The next prime is 64164271. The reversal of 64164263 is 36246146.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36246146 = 2 ⋅18123073.

It is a cyclic number.

It is not a de Polignac number, because 64164263 - 2¹² = 64160167 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 (64161263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74006 + ... + 74867.

It is an arithmetic number, because the mean of its divisors is an integer number (16078392).

Almost surely, 2^64164263 is an apocalyptic number.

64164263 is a deficient number, since it is larger than the sum of its proper divisors (149305).

64164263 is a wasteful number, since it uses less digits than its factorization.

64164263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149304.

The product of its digits is 20736, while the sum is 32.

The square root of 64164263 is about 8010.2598584565. The cubic root of 64164263 is about 400.3419222230.

The spelling of 64164263 in words is "sixty-four million, one hundred sixty-four thousand, two hundred sixty-three".