64390262 has 4 divisors (see below), whose sum is σ = 96585396. Its totient is φ = 32195130.

The previous prime is 64390247. The next prime is 64390267. The reversal of 64390262 is 26209346.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 26209346 = 2 ⋅13104673.

It is a super-2 number, since 2×64390262² = 8292211680857288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64390267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16097564 + ... + 16097567.

It is an arithmetic number, because the mean of its divisors is an integer number (24146349).

Almost surely, 2^64390262 is an apocalyptic number.

64390262 is a deficient number, since it is larger than the sum of its proper divisors (32195134).

64390262 is a wasteful number, since it uses less digits than its factorization.

64390262 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32195133.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 64390262 is about 8024.3543042416. The cubic root of 64390262 is about 400.8113988004.

The spelling of 64390262 in words is "sixty-four million, three hundred ninety thousand, two hundred sixty-two".