64337897 has 8 divisors (see below), whose sum is σ = 70977480. Its totient is φ = 57939840.

The previous prime is 64337887. The next prime is 64337939. The reversal of 64337897 is 79873346.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2621161 + 61716736 = 1619^2 + 7856^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64337897 - 2⁴ = 64337881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64337827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59822 + ... + 60887.

It is an arithmetic number, because the mean of its divisors is an integer number (8872185).

Almost surely, 2^64337897 is an apocalyptic number.

It is an amenable number.

64337897 is a deficient number, since it is larger than the sum of its proper divisors (6639583).

64337897 is a wasteful number, since it uses less digits than its factorization.

64337897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120763.

The product of its digits is 762048, while the sum is 47.

The square root of 64337897 is about 8021.0907612369. The cubic root of 64337897 is about 400.7027168330.

The spelling of 64337897 in words is "sixty-four million, three hundred thirty-seven thousand, eight hundred ninety-seven".