64354997 has 4 divisors (see below), whose sum is σ = 73548576. Its totient is φ = 55161420.

The previous prime is 64354987. The next prime is 64354999. The reversal of 64354997 is 79945346.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 64354997 - 2⁴ = 64354981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64354999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4596779 + ... + 4596792.

It is an arithmetic number, because the mean of its divisors is an integer number (18387144).

Almost surely, 2^64354997 is an apocalyptic number.

It is an amenable number.

64354997 is a deficient number, since it is larger than the sum of its proper divisors (9193579).

64354997 is an equidigital number, since it uses as much as digits as its factorization.

64354997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9193578.

The product of its digits is 816480, while the sum is 47.

The square root of 64354997 is about 8022.1566302335. The cubic root of 64354997 is about 400.7382138460.

The spelling of 64354997 in words is "sixty-four million, three hundred fifty-four thousand, nine hundred ninety-seven".