64311617 has 8 divisors (see below), whose sum is σ = 65973600. Its totient is φ = 62657280.

The previous prime is 64311581. The next prime is 64311659. The reversal of 64311617 is 71611346.

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

It is a cyclic number.

It is not a de Polignac number, because 64311617 - 2⁶ = 64311553 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64311617.

It is not an unprimeable number, because it can be changed into a prime (64311517) 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, 17642 + ... + 20972.

It is an arithmetic number, because the mean of its divisors is an integer number (8246700).

Almost surely, 2^64311617 is an apocalyptic number.

It is an amenable number.

64311617 is a deficient number, since it is larger than the sum of its proper divisors (1661983).

64311617 is a wasteful number, since it uses less digits than its factorization.

64311617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3823.

The product of its digits is 3024, while the sum is 29.

The square root of 64311617 is about 8019.4524127274. The cubic root of 64311617 is about 400.6481512659.

The spelling of 64311617 in words is "sixty-four million, three hundred eleven thousand, six hundred seventeen".