622746431 has 4 divisors (see below), whose sum is σ = 659378592. Its totient is φ = 586114272.

The previous prime is 622746409. The next prime is 622746437. The reversal of 622746431 is 134647226.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 622746431 - 2¹⁴ = 622730047 is a prime.

It is a super-2 number, since 2×622746431² = 775626234646475522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 622746391 and 622746400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (622746437) 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, 18316055 + ... + 18316088.

It is an arithmetic number, because the mean of its divisors is an integer number (164844648).

Almost surely, 2^622746431 is an apocalyptic number.

622746431 is a deficient number, since it is larger than the sum of its proper divisors (36632161).

622746431 is a wasteful number, since it uses less digits than its factorization.

622746431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36632160.

The product of its digits is 48384, while the sum is 35.

The square root of 622746431 is about 24954.8879180012. The cubic root of 622746431 is about 853.9591227575.

The spelling of 622746431 in words is "six hundred twenty-two million, seven hundred forty-six thousand, four hundred thirty-one".