621990362 has 16 divisors (see below), whose sum is σ = 1069915392. Its totient is φ = 265655760.

The previous prime is 621990361. The next prime is 621990379. The reversal of 621990362 is 263099126.

It is not an unprimeable number, because it can be changed into a prime (621990361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71714 + ... + 79917.

It is an arithmetic number, because the mean of its divisors is an integer number (66869712).

Almost surely, 2^621990362 is an apocalyptic number.

621990362 is a deficient number, since it is larger than the sum of its proper divisors (447925030).

621990362 is a wasteful number, since it uses less digits than its factorization.

621990362 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151933.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 621990362 is about 24939.7346016352. The cubic root of 621990362 is about 853.6133889473.

The spelling of 621990362 in words is "six hundred twenty-one million, nine hundred ninety thousand, three hundred sixty-two".