64423355 has 32 divisors (see below), whose sum is σ = 83280960. Its totient is φ = 47756800.

The previous prime is 64423349. The next prime is 64423361. The reversal of 64423355 is 55332446.

It is an interprime number because it is at equal distance from previous prime (64423349) and next prime (64423361).

It is not a de Polignac number, because 64423355 - 2¹⁴ = 64406971 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 637805 + ... + 637905.

It is an arithmetic number, because the mean of its divisors is an integer number (2602530).

Almost surely, 2^64423355 is an apocalyptic number.

64423355 is a deficient number, since it is larger than the sum of its proper divisors (18857605).

64423355 is a wasteful number, since it uses less digits than its factorization.

64423355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271.

The product of its digits is 43200, while the sum is 32.

The square root of 64423355 is about 8026.4160744382. The cubic root of 64423355 is about 400.8800519348.

Subtracting from 64423355 its reverse (55332446), we obtain a palindrome (9090909).

The spelling of 64423355 in words is "sixty-four million, four hundred twenty-three thousand, three hundred fifty-five".