64733394 has 64 divisors (see below), whose sum is σ = 150958080. Its totient is φ = 18312000.

The previous prime is 64733393. The next prime is 64733401. The reversal of 64733394 is 49333746.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (64733393) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58789 + ... + 59879.

It is an arithmetic number, because the mean of its divisors is an integer number (2358720).

Almost surely, 2^64733394 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64733394, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75479040).

64733394 is an abundant number, since it is smaller than the sum of its proper divisors (86224686).

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

64733394 is a wasteful number, since it uses less digits than its factorization.

64733394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1167.

The product of its digits is 163296, while the sum is 39.

The square root of 64733394 is about 8045.7065569159. The cubic root of 64733394 is about 401.5221048123.

The spelling of 64733394 in words is "sixty-four million, seven hundred thirty-three thousand, three hundred ninety-four".