64518234 has 32 divisors (see below), whose sum is σ = 141220800. Its totient is φ = 19488000.

The previous prime is 64518191. The next prime is 64518239. The reversal of 64518234 is 43281546.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 64518195 and 64518204.

It is not an unprimeable number, because it can be changed into a prime (64518239) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21634 + ... + 24434.

It is an arithmetic number, because the mean of its divisors is an integer number (4413150).

Almost surely, 2^64518234 is an apocalyptic number.

64518234 is an abundant number, since it is smaller than the sum of its proper divisors (76702566).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64518234 is a wasteful number, since it uses less digits than its factorization.

64518234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3166.

The product of its digits is 23040, while the sum is 33.

The square root of 64518234 is about 8032.3243211414. The cubic root of 64518234 is about 401.0767530729.

The spelling of 64518234 in words is "sixty-four million, five hundred eighteen thousand, two hundred thirty-four".