64413518 has 16 divisors (see below), whose sum is σ = 104185536. Its totient is φ = 29691360.

The previous prime is 64413509. The next prime is 64413523. The reversal of 64413518 is 81531446.

It is a super-2 number, since 2×64413518² = 8298202602272648, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36128 + ... + 37868.

It is an arithmetic number, because the mean of its divisors is an integer number (6511596).

Almost surely, 2^64413518 is an apocalyptic number.

64413518 is a deficient number, since it is larger than the sum of its proper divisors (39772018).

64413518 is a wasteful number, since it uses less digits than its factorization.

64413518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3179.

The product of its digits is 11520, while the sum is 32.

The square root of 64413518 is about 8025.8032619795. The cubic root of 64413518 is about 400.8596470273.

The spelling of 64413518 in words is "sixty-four million, four hundred thirteen thousand, five hundred eighteen".