64883220 has 48 divisors (see below), whose sum is σ = 192362688. Its totient is φ = 16284160.

The previous prime is 64883219. The next prime is 64883239. The reversal of 64883220 is 2238846.

It is a congruent 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, 30786 + ... + 32825.

It is an arithmetic number, because the mean of its divisors is an integer number (4007556).

Almost surely, 2^64883220 is an apocalyptic number.

64883220 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64883220 is an abundant number, since it is smaller than the sum of its proper divisors (127479468).

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

64883220 is a wasteful number, since it uses less digits than its factorization.

64883220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63640 (or 63638 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 64883220 is about 8055.0121042740. The cubic root of 64883220 is about 401.8316415873.

The spelling of 64883220 in words is "sixty-four million, eight hundred eighty-three thousand, two hundred twenty".