64537797 has 16 divisors (see below), whose sum is σ = 93234240. Its totient is φ = 39551232.

The previous prime is 64537777. The next prime is 64537801. The reversal of 64537797 is 79773546.

64537797 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 64537797 - 2¹⁵ = 64505029 is a prime.

It is a super-2 number, since 2×64537797² = 8330254483226418, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64537777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12522 + ... + 16907.

It is an arithmetic number, because the mean of its divisors is an integer number (5827140).

Almost surely, 2^64537797 is an apocalyptic number.

It is an amenable number.

64537797 is a deficient number, since it is larger than the sum of its proper divisors (28696443).

64537797 is a wasteful number, since it uses less digits than its factorization.

64537797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29492.

The product of its digits is 1111320, while the sum is 48.

The square root of 64537797 is about 8033.5419959069. The cubic root of 64537797 is about 401.1172866871.

The spelling of 64537797 in words is "sixty-four million, five hundred thirty-seven thousand, seven hundred ninety-seven".