64330313 has 4 divisors (see below), whose sum is σ = 64635408. Its totient is φ = 64025220.

The previous prime is 64330297. The next prime is 64330319. The reversal of 64330313 is 31303346.

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, and also an emirpimes, since its reverse is a distinct semiprime: 31303346 = 2 ⋅15651673.

It is a cyclic number.

It is not a de Polignac number, because 64330313 - 2⁴ = 64330297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64330319) 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, 152231 + ... + 152652.

It is an arithmetic number, because the mean of its divisors is an integer number (16158852).

Almost surely, 2^64330313 is an apocalyptic number.

It is an amenable number.

64330313 is a deficient number, since it is larger than the sum of its proper divisors (305095).

64330313 is a wasteful number, since it uses less digits than its factorization.

64330313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305094.

The product of its (nonzero) digits is 1944, while the sum is 23.

The square root of 64330313 is about 8020.6179936461. The cubic root of 64330313 is about 400.6869715830.

Adding to 64330313 its reverse (31303346), we get a palindrome (95633659).

The spelling of 64330313 in words is "sixty-four million, three hundred thirty thousand, three hundred thirteen".