64455575 has 12 divisors (see below), whose sum is σ = 81052848. Its totient is φ = 50836800.

The previous prime is 64455563. The next prime is 64455577. The reversal of 64455575 is 57555446.

It is not a de Polignac number, because 64455575 - 2⁶ = 64455511 is a prime.

It is a super-2 number, since 2×64455575² = 8309042297161250, 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 (64455577) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16382 + ... + 19931.

It is an arithmetic number, because the mean of its divisors is an integer number (6754404).

Almost surely, 2^64455575 is an apocalyptic number.

64455575 is a deficient number, since it is larger than the sum of its proper divisors (16597273).

64455575 is a wasteful number, since it uses less digits than its factorization.

64455575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36394 (or 36389 counting only the distinct ones).

The product of its digits is 420000, while the sum is 41.

The square root of 64455575 is about 8028.4229460088. The cubic root of 64455575 is about 400.9468714011.

The spelling of 64455575 in words is "sixty-four million, four hundred fifty-five thousand, five hundred seventy-five".