64883784 has 64 divisors (see below), whose sum is σ = 195148800. Its totient is φ = 17561664.

The previous prime is 64883783. The next prime is 64883801. The reversal of 64883784 is 48738846.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (64883783) 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, 6972 + ... + 13355.

It is an arithmetic number, because the mean of its divisors is an integer number (3049200).

Almost surely, 2^64883784 is an apocalyptic number.

It is an amenable number.

64883784 is an abundant number, since it is smaller than the sum of its proper divisors (130265016).

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

64883784 is a wasteful number, since it uses less digits than its factorization.

64883784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20362 (or 20358 counting only the distinct ones).

The product of its digits is 1032192, while the sum is 48.

The square root of 64883784 is about 8055.0471134563. The cubic root of 64883784 is about 401.8328058965.

The spelling of 64883784 in words is "sixty-four million, eight hundred eighty-three thousand, seven hundred eighty-four".