621046764 has 192 divisors, whose sum is σ = 1810350080. Its totient is φ = 185177664.

The previous prime is 621046763. The next prime is 621046799. The reversal of 621046764 is 467640126.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (621046763) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4890069 + ... + 4890195.

Almost surely, 2^621046764 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 621046764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (905175040).

621046764 is an abundant number, since it is smaller than the sum of its proper divisors (1189303316).

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

621046764 is a wasteful number, since it uses less digits than its factorization.

621046764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208 (or 188 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 621046764 is about 24920.8098584296. The cubic root of 621046764 is about 853.1815089728.

The spelling of 621046764 in words is "six hundred twenty-one million, forty-six thousand, seven hundred sixty-four".