64611420 has 96 divisors (see below), whose sum is σ = 190149120. Its totient is φ = 16369920.

The previous prime is 64611341. The next prime is 64611461. The reversal of 64611420 is 2411646.

It is a congruent number.

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, 123279 + ... + 123801.

It is an arithmetic number, because the mean of its divisors is an integer number (1980720).

Almost surely, 2^64611420 is an apocalyptic number.

64611420 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64611420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95074560).

64611420 is an abundant number, since it is smaller than the sum of its proper divisors (125537700).

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

64611420 is a wasteful number, since it uses less digits than its factorization.

64611420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635 (or 633 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 64611420 is about 8038.1229152085. The cubic root of 64611420 is about 401.2697566965.

The spelling of 64611420 in words is "sixty-four million, six hundred eleven thousand, four hundred twenty".