64568898 has 12 divisors (see below), whose sum is σ = 139899318. Its totient is φ = 21522960.

The previous prime is 64568869. The next prime is 64568899. The reversal of 64568898 is 89886546.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 60419529 + 4149369 = 7773^2 + 2037^2 .

It is not an unprimeable number, because it can be changed into a prime (64568899) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1793563 + ... + 1793598.

Almost surely, 2^64568898 is an apocalyptic number.

64568898 is an abundant number, since it is smaller than the sum of its proper divisors (75330420).

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

64568898 is a wasteful number, since it uses less digits than its factorization.

64568898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3587169 (or 3587166 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 54.

The square root of 64568898 is about 8035.4774593673. The cubic root of 64568898 is about 401.1817096346.

The spelling of 64568898 in words is "sixty-four million, five hundred sixty-eight thousand, eight hundred ninety-eight".