64426197 has 32 divisors (see below), whose sum is σ = 101191680. Its totient is φ = 36048320.

The previous prime is 64426189. The next prime is 64426231. The reversal of 64426197 is 79162446.

It is a happy number.

It is not a de Polignac number, because 64426197 - 2³ = 64426189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64426127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20548 + ... + 23474.

It is an arithmetic number, because the mean of its divisors is an integer number (3162240).

Almost surely, 2^64426197 is an apocalyptic number.

It is an amenable number.

64426197 is a deficient number, since it is larger than the sum of its proper divisors (36765483).

64426197 is a wasteful number, since it uses less digits than its factorization.

64426197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2993.

The product of its digits is 72576, while the sum is 39.

The square root of 64426197 is about 8026.5931128967. The cubic root of 64426197 is about 400.8859467140.

The spelling of 64426197 in words is "sixty-four million, four hundred twenty-six thousand, one hundred ninety-seven".