1622750997 has 16 divisors (see below), whose sum is σ = 2618220672. Its totient is φ = 872739840.

The previous prime is 1622750977. The next prime is 1622751019. The reversal of 1622750997 is 7990572261.

It is not a de Polignac number, because 1622750997 - 2⁷ = 1622750869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1622750957) 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, 2272404 + ... + 2273117.

It is an arithmetic number, because the mean of its divisors is an integer number (163638792).

Almost surely, 2^1622750997 is an apocalyptic number.

1622750997 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1622750997 is a deficient number, since it is larger than the sum of its proper divisors (995469675).

1622750997 is a wasteful number, since it uses less digits than its factorization.

1622750997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4545548.

The product of its (nonzero) digits is 476280, while the sum is 48.

The square root of 1622750997 is about 40283.3836339501. The cubic root of 1622750997 is about 1175.1247181936.

The spelling of 1622750997 in words is "one billion, six hundred twenty-two million, seven hundred fifty thousand, nine hundred ninety-seven".