64364897 has 6 divisors (see below), whose sum is σ = 66509154. Its totient is φ = 62287680.

The previous prime is 64364869. The next prime is 64364933. The reversal of 64364897 is 79846346.

It can be written as a sum of positive squares in only one way, i.e., 36917776 + 27447121 = 6076^2 + 5239^2 .

It is not a de Polignac number, because 64364897 - 2¹² = 64360801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64364857) 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, 32528 + ... + 34449.

It is an arithmetic number, because the mean of its divisors is an integer number (11084859).

Almost surely, 2^64364897 is an apocalyptic number.

It is an amenable number.

64364897 is a deficient number, since it is larger than the sum of its proper divisors (2144257).

64364897 is an equidigital number, since it uses as much as digits as its factorization.

64364897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67039 (or 67008 counting only the distinct ones).

The product of its digits is 870912, while the sum is 47.

The square root of 64364897 is about 8022.7736475610. The cubic root of 64364897 is about 400.7587618743.

The spelling of 64364897 in words is "sixty-four million, three hundred sixty-four thousand, eight hundred ninety-seven".