621112464 has 120 divisors (see below), whose sum is σ = 1991658240. Its totient is φ = 177007104.

The previous prime is 621112441. The next prime is 621112469. The reversal of 621112464 is 464211126.

621112464 is a `hidden beast` number, since 621 + 11 + 24 + 6 + 4 = 666.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (621112469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 724324 + ... + 725180.

It is an arithmetic number, because the mean of its divisors is an integer number (16597152).

Almost surely, 2^621112464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 621112464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (995829120).

621112464 is an abundant number, since it is smaller than the sum of its proper divisors (1370545776).

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

621112464 is a wasteful number, since it uses less digits than its factorization.

621112464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1597 (or 1588 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 621112464 is about 24922.1279990293. The cubic root of 621112464 is about 853.2115936899.

The spelling of 621112464 in words is "six hundred twenty-one million, one hundred twelve thousand, four hundred sixty-four".