621376055 has 8 divisors (see below), whose sum is σ = 745931472. Its totient is φ = 496914048.

The previous prime is 621376043. The next prime is 621376087. The reversal of 621376055 is 550673126.

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

It is a cyclic number.

It is not a de Polignac number, because 621376055 - 2⁶ = 621375991 is a prime.

It is a super-2 number, since 2×621376055² = 772216403454726050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7769 + ... + 36098.

It is an arithmetic number, because the mean of its divisors is an integer number (93241434).

Almost surely, 2^621376055 is an apocalyptic number.

621376055 is a deficient number, since it is larger than the sum of its proper divisors (124555417).

621376055 is a wasteful number, since it uses less digits than its factorization.

621376055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46705.

The product of its (nonzero) digits is 37800, while the sum is 35.

The square root of 621376055 is about 24927.4157304764. The cubic root of 621376055 is about 853.3322734396.

The spelling of 621376055 in words is "six hundred twenty-one million, three hundred seventy-six thousand, fifty-five".