64420330 has 64 divisors (see below), whose sum is σ = 130999680. Its totient is φ = 22650624.

The previous prime is 64420273. The next prime is 64420351. The reversal of 64420330 is 3302446.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 283677 + ... + 283903.

It is an arithmetic number, because the mean of its divisors is an integer number (2046870).

Almost surely, 2^64420330 is an apocalyptic number.

64420330 is an abundant number, since it is smaller than the sum of its proper divisors (66579350).

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

64420330 is a wasteful number, since it uses less digits than its factorization.

64420330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 64420330 is about 8026.2276319576. The cubic root of 64420330 is about 400.8737773928.

Adding to 64420330 its reverse (3302446), we get a palindrome (67722776).

The spelling of 64420330 in words is "sixty-four million, four hundred twenty thousand, three hundred thirty".