5664639450 has 24 divisors (see below), whose sum is σ = 14048306208. Its totient is φ = 1510570480.

The previous prime is 5664639413. The next prime is 5664639509. The reversal of 5664639450 is 549364665.

It is a happy number.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 5664639450.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18881982 + ... + 18882281.

It is an arithmetic number, because the mean of its divisors is an integer number (585346092).

Almost surely, 2^5664639450 is an apocalyptic number.

5664639450 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

5664639450 is an abundant number, since it is smaller than the sum of its proper divisors (8383666758).

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

5664639450 is a wasteful number, since it uses less digits than its factorization.

5664639450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37764278 (or 37764273 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 48.

The square root of 5664639450 is about 75263.7990670149. The cubic root of 5664639450 is about 1782.6144564225.

The spelling of 5664639450 in words is "five billion, six hundred sixty-four million, six hundred thirty-nine thousand, four hundred fifty".