621712463 has 4 divisors (see below), whose sum is σ = 621773688. Its totient is φ = 621651240.

The previous prime is 621712459. The next prime is 621712477. The reversal of 621712463 is 364217126.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 621712463 - 2² = 621712459 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 (621712493) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11333 + ... + 37038.

It is an arithmetic number, because the mean of its divisors is an integer number (155443422).

Almost surely, 2^621712463 is an apocalyptic number.

621712463 is a deficient number, since it is larger than the sum of its proper divisors (61225).

621712463 is a wasteful number, since it uses less digits than its factorization.

621712463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61224.

The product of its digits is 12096, while the sum is 32.

The square root of 621712463 is about 24934.1625686527. The cubic root of 621712463 is about 853.4862414011.

Adding to 621712463 its reverse (364217126), we get a palindrome (985929589).

The spelling of 621712463 in words is "six hundred twenty-one million, seven hundred twelve thousand, four hundred sixty-three".