64832220 has 72 divisors (see below), whose sum is σ = 208235664. Its totient is φ = 16270848.

The previous prime is 64832153. The next prime is 64832221. The reversal of 64832220 is 2223846.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64832221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7534 + ... + 13653.

It is an arithmetic number, because the mean of its divisors is an integer number (2892162).

Almost surely, 2^64832220 is an apocalyptic number.

64832220 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64832220 is an abundant number, since it is smaller than the sum of its proper divisors (143403444).

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

64832220 is a wasteful number, since it uses less digits than its factorization.

64832220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21219 (or 21214 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 64832220 is about 8051.8457511306. The cubic root of 64832220 is about 401.7263304066.

The spelling of 64832220 in words is "sixty-four million, eight hundred thirty-two thousand, two hundred twenty".