64312337 has 4 divisors (see below), whose sum is σ = 64491840. Its totient is φ = 64132836.

The previous prime is 64312291. The next prime is 64312357. The reversal of 64312337 is 73321346.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 64312337 - 2⁸ = 64312081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64312357) 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, 89213 + ... + 89930.

It is an arithmetic number, because the mean of its divisors is an integer number (16122960).

Almost surely, 2^64312337 is an apocalyptic number.

It is an amenable number.

64312337 is a deficient number, since it is larger than the sum of its proper divisors (179503).

64312337 is a wasteful number, since it uses less digits than its factorization.

64312337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179502.

The product of its digits is 9072, while the sum is 29.

The square root of 64312337 is about 8019.4973034474. The cubic root of 64312337 is about 400.6496464110.

Subtracting 64312337 from its reverse (73321346), we obtain a palindrome (9009009).

The spelling of 64312337 in words is "sixty-four million, three hundred twelve thousand, three hundred thirty-seven".