621361355 has 8 divisors (see below), whose sum is σ = 763820064. Its totient is φ = 484964800.

The previous prime is 621361333. The next prime is 621361357. The reversal of 621361355 is 553163126.

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

It is not a de Polignac number, because 621361355 - 2¹⁶ = 621295819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (621361357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1515311 + ... + 1515720.

It is an arithmetic number, because the mean of its divisors is an integer number (95477508).

Almost surely, 2^621361355 is an apocalyptic number.

621361355 is a deficient number, since it is larger than the sum of its proper divisors (142458709).

621361355 is a wasteful number, since it uses less digits than its factorization.

621361355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3031077.

The product of its digits is 16200, while the sum is 32.

The square root of 621361355 is about 24927.1208726560. The cubic root of 621361355 is about 853.3255442438.

The spelling of 621361355 in words is "six hundred twenty-one million, three hundred sixty-one thousand, three hundred fifty-five".