621552023 has 8 divisors (see below), whose sum is σ = 651840000. Its totient is φ = 591536088.

The previous prime is 621551993. The next prime is 621552091. The reversal of 621552023 is 320255126.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-621552023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 621551983 and 621552001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621552523) 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, 63323 + ... + 72476.

It is an arithmetic number, because the mean of its divisors is an integer number (81480000).

Almost surely, 2^621552023 is an apocalyptic number.

621552023 is a deficient number, since it is larger than the sum of its proper divisors (30287977).

621552023 is a wasteful number, since it uses less digits than its factorization.

621552023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136021.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 621552023 is about 24930.9450883836. The cubic root of 621552023 is about 853.4128177948.

The spelling of 621552023 in words is "six hundred twenty-one million, five hundred fifty-two thousand, twenty-three".