622965981 has 16 divisors (see below), whose sum is σ = 911147328. Its totient is φ = 375465600.

The previous prime is 622965953. The next prime is 622965997. The reversal of 622965981 is 189569226.

622965981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 622965981 - 2¹¹ = 622963933 is a prime.

It is a super-2 number, since 2×622965981² = 776173226966584722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 622965981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (622965881) 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, 46176 + ... + 58121.

It is an arithmetic number, because the mean of its divisors is an integer number (56946708).

Almost surely, 2^622965981 is an apocalyptic number.

It is an amenable number.

622965981 is a deficient number, since it is larger than the sum of its proper divisors (288181347).

622965981 is a wasteful number, since it uses less digits than its factorization.

622965981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104492.

The product of its digits is 466560, while the sum is 48.

The square root of 622965981 is about 24959.2864681665. The cubic root of 622965981 is about 854.0594657369.

The spelling of 622965981 in words is "six hundred twenty-two million, nine hundred sixty-five thousand, nine hundred eighty-one".