622988 has 6 divisors (see below), whose sum is σ = 1090236. Its totient is φ = 311492.

The previous prime is 622987. The next prime is 622997. The reversal of 622988 is 889226.

It is a super-2 number, since 2×622988² = 776228096288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (622987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77870 + ... + 77877.

It is an arithmetic number, because the mean of its divisors is an integer number (181706).

2⁶²²⁹⁸⁸ is an apocalyptic number.

It is an amenable number.

622988 is a deficient number, since it is larger than the sum of its proper divisors (467248).

622988 is a wasteful number, since it uses less digits than its factorization.

622988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155751 (or 155749 counting only the distinct ones).

The product of its digits is 13824, while the sum is 35.

The square root of 622988 is about 789.2958887515. The cubic root of 622988 is about 85.4069527984.

The spelling of 622988 in words is "six hundred twenty-two thousand, nine hundred eighty-eight".