621230455 has 8 divisors (see below), whose sum is σ = 746818272. Its totient is φ = 496089888.

The previous prime is 621230453. The next prime is 621230531. The reversal of 621230455 is 554032126.

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 621230455 - 2¹ = 621230453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621230453) 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, 108747 + ... + 114316.

It is an arithmetic number, because the mean of its divisors is an integer number (93352284).

Almost surely, 2^621230455 is an apocalyptic number.

621230455 is a deficient number, since it is larger than the sum of its proper divisors (125587817).

621230455 is a wasteful number, since it uses less digits than its factorization.

621230455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223625.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 621230455 is about 24924.4950801415. The cubic root of 621230455 is about 853.2656176769.

The spelling of 621230455 in words is "six hundred twenty-one million, two hundred thirty thousand, four hundred fifty-five".