64818601 has 9 divisors (see below), whose sum is σ = 66292311. Its totient is φ = 63377472.

The previous prime is 64818571. The next prime is 64818643. The reversal of 64818601 is 10681846.

The square root of 64818601 is 8051.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 29106025 + 35712576 = 5395^2 + 5976^2 .

It is not a de Polignac number, because 64818601 - 2¹⁷ = 64687529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64818001) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 668185 + ... + 668281.

Almost surely, 2^64818601 is an apocalyptic number.

64818601 is the 8051-st square number.

64818601 is the 4026-th centered octagonal number.

It is an amenable number.

64818601 is a deficient number, since it is larger than the sum of its proper divisors (1473710).

64818601 is an frugal number, since it uses more digits than its factorization.

64818601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360 (or 180 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 34.

The cubic root of 64818601 is about 401.6981988488.

Multiplying 64818601 by its product of nonzero digits (9216), we get a square (597368226816 = 772896²).

The spelling of 64818601 in words is "sixty-four million, eight hundred eighteen thousand, six hundred one".