621116874 has 48 divisors (see below), whose sum is σ = 1543109568. Its totient is φ = 176872896.

The previous prime is 621116861. The next prime is 621116893. The reversal of 621116874 is 478611126.

It is a happy number.

621116874 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30654 + ... + 46710.

It is an arithmetic number, because the mean of its divisors is an integer number (32148116).

Almost surely, 2^621116874 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 621116874, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (771554784).

621116874 is an abundant number, since it is smaller than the sum of its proper divisors (921992694).

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

621116874 is a wasteful number, since it uses less digits than its factorization.

621116874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16379 (or 16376 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 621116874 is about 24922.2164744631. The cubic root of 621116874 is about 853.2136129990.

The spelling of 621116874 in words is "six hundred twenty-one million, one hundred sixteen thousand, eight hundred seventy-four".