64465775 has 36 divisors (see below), whose sum is σ = 89155752. Its totient is φ = 46200000.

The previous prime is 64465769. The next prime is 64465777. The reversal of 64465775 is 57756446.

It is not a de Polignac number, because 64465775 - 2¹⁴ = 64449391 is a prime.

It is a super-2 number, since 2×64465775² = 8311672292701250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64465777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 305420 + ... + 305630.

Almost surely, 2^64465775 is an apocalyptic number.

64465775 is a deficient number, since it is larger than the sum of its proper divisors (24689977).

64465775 is a wasteful number, since it uses less digits than its factorization.

64465775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344 (or 328 counting only the distinct ones).

The product of its digits is 705600, while the sum is 44.

The square root of 64465775 is about 8029.0581639443. The cubic root of 64465775 is about 400.9680200366.

Adding to 64465775 its reverse (57756446), we get a palindrome (122222221).

It can be divided in two parts, 6446 and 5775, that added together give a palindrome (12221).

The spelling of 64465775 in words is "sixty-four million, four hundred sixty-five thousand, seven hundred seventy-five".