621790941 has 8 divisors (see below), whose sum is σ = 872689120. Its totient is φ = 392710032.

The previous prime is 621790937. The next prime is 621790969. The reversal of 621790941 is 149097126.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 621790941 - 2² = 621790937 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 621790941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621790921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5454250 + ... + 5454363.

It is an arithmetic number, because the mean of its divisors is an integer number (109086140).

Almost surely, 2^621790941 is an apocalyptic number.

It is an amenable number.

621790941 is a deficient number, since it is larger than the sum of its proper divisors (250898179).

621790941 is a wasteful number, since it uses less digits than its factorization.

621790941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10908635.

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 621790941 is about 24935.7362233402. The cubic root of 621790941 is about 853.5221513966.

The spelling of 621790941 in words is "six hundred twenty-one million, seven hundred ninety thousand, nine hundred forty-one".