68564475 has 90 divisors (see below), whose sum is σ = 147954444. Its totient is φ = 31298400.

The previous prime is 68564453. The next prime is 68564477. The reversal of 68564475 is 57446586.

It is not a de Polignac number, because 68564475 - 2⁶ = 68564411 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 68564475.

It is not an unprimeable number, because it can be changed into a prime (68564477) by changing a digit.

It is a polite number, since it can be written in 89 ways as a sum of consecutive naturals, for example, 98880 + ... + 99570.

Almost surely, 2^68564475 is an apocalyptic number.

68564475 is an abundant number, since it is smaller than the sum of its proper divisors (79389969).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68564475 is a wasteful number, since it uses less digits than its factorization.

68564475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 727 (or 706 counting only the distinct ones).

The product of its digits is 806400, while the sum is 45.

The square root of 68564475 is about 8280.3668396998. The cubic root of 68564475 is about 409.2918073864.

The spelling of 68564475 in words is "sixty-eight million, five hundred sixty-four thousand, four hundred seventy-five".