64587897 has 24 divisors (see below), whose sum is σ = 107134560. Its totient is φ = 37082880.

The previous prime is 64587889. The next prime is 64587899. The reversal of 64587897 is 79878546.

It is not a de Polignac number, because 64587897 - 2³ = 64587889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64587899) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15288 + ... + 19049.

It is an arithmetic number, because the mean of its divisors is an integer number (4463940).

Almost surely, 2^64587897 is an apocalyptic number.

It is an amenable number.

64587897 is a deficient number, since it is larger than the sum of its proper divisors (42546663).

64587897 is a wasteful number, since it uses less digits than its factorization.

64587897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34373 (or 34370 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 54.

The square root of 64587897 is about 8036.6595672580. The cubic root of 64587897 is about 401.2210541905.

The spelling of 64587897 in words is "sixty-four million, five hundred eighty-seven thousand, eight hundred ninety-seven".