64220470 has 16 divisors (see below), whose sum is σ = 115862400. Its totient is φ = 25629184.

The previous prime is 64220467. The next prime is 64220477. The reversal of 64220470 is 7402246.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64220477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2662 + ... + 11641.

It is an arithmetic number, because the mean of its divisors is an integer number (7241400).

Almost surely, 2^64220470 is an apocalyptic number.

64220470 is a deficient number, since it is larger than the sum of its proper divisors (51641930).

64220470 is a wasteful number, since it uses less digits than its factorization.

64220470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14759.

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 64220470 is about 8013.7675284475. The cubic root of 64220470 is about 400.4587860871.

It can be divided in two parts, 642 and 20470, that added together give a palindrome (21112).

The spelling of 64220470 in words is "sixty-four million, two hundred twenty thousand, four hundred seventy".