64524895 has 4 divisors (see below), whose sum is σ = 77429880. Its totient is φ = 51619912.

The previous prime is 64524883. The next prime is 64524899. The reversal of 64524895 is 59842546.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 59842546 = 2 ⋅29921273.

It is a cyclic number.

It is not a de Polignac number, because 64524895 - 2⁷ = 64524767 is a prime.

It is a super-2 number, since 2×64524895² = 8326924149522050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64524899) 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, 6452485 + ... + 6452494.

It is an arithmetic number, because the mean of its divisors is an integer number (19357470).

Almost surely, 2^64524895 is an apocalyptic number.

64524895 is a deficient number, since it is larger than the sum of its proper divisors (12904985).

64524895 is a wasteful number, since it uses less digits than its factorization.

64524895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12904984.

The product of its digits is 345600, while the sum is 43.

The square root of 64524895 is about 8032.7389475820. The cubic root of 64524895 is about 401.0905552709.

The spelling of 64524895 in words is "sixty-four million, five hundred twenty-four thousand, eight hundred ninety-five".