64263913 has 8 divisors (see below), whose sum is σ = 75977280. Its totient is φ = 53183760.

The previous prime is 64263911. The next prime is 64263949. The reversal of 64263913 is 31936246.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 64263913 - 2¹ = 64263911 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64263911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158083 + ... + 158488.

It is an arithmetic number, because the mean of its divisors is an integer number (9497160).

Almost surely, 2^64263913 is an apocalyptic number.

It is an amenable number.

64263913 is a deficient number, since it is larger than the sum of its proper divisors (11713367).

64263913 is a wasteful number, since it uses less digits than its factorization.

64263913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316607.

The product of its digits is 23328, while the sum is 34.

The square root of 64263913 is about 8016.4775930579. The cubic root of 64263913 is about 400.5490647250.

The spelling of 64263913 in words is "sixty-four million, two hundred sixty-three thousand, nine hundred thirteen".