621944463 has 16 divisors (see below), whose sum is σ = 948093440. Its totient is φ = 355258656.

The previous prime is 621944441. The next prime is 621944489. The reversal of 621944463 is 364449126.

It is not a de Polignac number, because 621944463 - 2⁵ = 621944431 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621944263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77598 + ... + 85236.

It is an arithmetic number, because the mean of its divisors is an integer number (59255840).

Almost surely, 2^621944463 is an apocalyptic number.

621944463 is a deficient number, since it is larger than the sum of its proper divisors (326148977).

621944463 is a wasteful number, since it uses less digits than its factorization.

621944463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11526.

The product of its digits is 124416, while the sum is 39.

The square root of 621944463 is about 24938.8143864138. The cubic root of 621944463 is about 853.5923913204.

The spelling of 621944463 in words is "six hundred twenty-one million, nine hundred forty-four thousand, four hundred sixty-three".