64315511 has 16 divisors (see below), whose sum is σ = 72051168. Its totient is φ = 57024000.

The previous prime is 64315501. The next prime is 64315519. The reversal of 64315511 is 11551346.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64315511 is a prime.

It is a super-3 number, since 3×64315511³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64315519) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34811 + ... + 36611.

It is an arithmetic number, because the mean of its divisors is an integer number (4503198).

Almost surely, 2^64315511 is an apocalyptic number.

64315511 is a deficient number, since it is larger than the sum of its proper divisors (7735657).

64315511 is a wasteful number, since it uses less digits than its factorization.

64315511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1922.

The product of its digits is 1800, while the sum is 26.

The square root of 64315511 is about 8019.6951937090. The cubic root of 64315511 is about 400.6562373758.

Adding to 64315511 its reverse (11551346), we get a palindrome (75866857).

The spelling of 64315511 in words is "sixty-four million, three hundred fifteen thousand, five hundred eleven".