622972887 has 4 divisors (see below), whose sum is σ = 830630520. Its totient is φ = 415315256.

The previous prime is 622972879. The next prime is 622972891. The reversal of 622972887 is 788279226.

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 622972887 - 2³ = 622972879 is a prime.

It is a super-2 number, since 2×622972887² = 776190435874229538, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (622972787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103828812 + ... + 103828817.

It is an arithmetic number, because the mean of its divisors is an integer number (207657630).

Almost surely, 2^622972887 is an apocalyptic number.

622972887 is a deficient number, since it is larger than the sum of its proper divisors (207657633).

622972887 is a wasteful number, since it uses less digits than its factorization.

622972887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207657632.

The product of its digits is 1354752, while the sum is 51.

The square root of 622972887 is about 24959.4248130841. The cubic root of 622972887 is about 854.0626216679.

The spelling of 622972887 in words is "six hundred twenty-two million, nine hundred seventy-two thousand, eight hundred eighty-seven".