64531194 has 32 divisors (see below), whose sum is σ = 158847360. Its totient is φ = 17019072.

The previous prime is 64531151. The next prime is 64531267. The reversal of 64531194 is 49113546.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58549 + ... + 59640.

It is an arithmetic number, because the mean of its divisors is an integer number (4963980).

Almost surely, 2^64531194 is an apocalyptic number.

64531194 is an abundant number, since it is smaller than the sum of its proper divisors (94316166).

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

64531194 is a wasteful number, since it uses less digits than its factorization.

64531194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118214.

The product of its digits is 12960, while the sum is 33.

The square root of 64531194 is about 8033.1310209656. The cubic root of 64531194 is about 401.1036064981.

The spelling of 64531194 in words is "sixty-four million, five hundred thirty-one thousand, one hundred ninety-four".