621253263 has 8 divisors (see below), whose sum is σ = 828572976. Its totient is φ = 414051200.

The previous prime is 621253261. The next prime is 621253267. The reversal of 621253263 is 362352126.

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 621253263 - 2¹ = 621253261 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 621253263.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621253261) 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, 16248 + ... + 38813.

It is an arithmetic number, because the mean of its divisors is an integer number (103571622).

Almost surely, 2^621253263 is an apocalyptic number.

621253263 is a deficient number, since it is larger than the sum of its proper divisors (207319713).

621253263 is a wasteful number, since it uses less digits than its factorization.

621253263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58825.

The product of its digits is 12960, while the sum is 30.

The square root of 621253263 is about 24924.9526178085. The cubic root of 621253263 is about 853.2760598801.

The spelling of 621253263 in words is "six hundred twenty-one million, two hundred fifty-three thousand, two hundred sixty-three".