64069518 has 16 divisors (see below), whose sum is σ = 128229840. Its totient is φ = 21341376.

The previous prime is 64069471. The next prime is 64069519. The reversal of 64069518 is 81596046.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64069519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8418 + ... + 14106.

It is an arithmetic number, because the mean of its divisors is an integer number (8014365).

Almost surely, 2^64069518 is an apocalyptic number.

64069518 is an abundant number, since it is smaller than the sum of its proper divisors (64160322).

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

64069518 is a wasteful number, since it uses less digits than its factorization.

64069518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7571.

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 64069518 is about 8004.3436957692. The cubic root of 64069518 is about 400.1447767596.

The spelling of 64069518 in words is "sixty-four million, sixty-nine thousand, five hundred eighteen".