622785156 has 48 divisors (see below), whose sum is σ = 1696106496. Its totient is φ = 174151584.

The previous prime is 622785151. The next prime is 622785181. The reversal of 622785156 is 651587226.

It is a super-2 number, since 2×622785156² = 775722701067888672, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (622785151) 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, 74926 + ... + 82821.

It is an arithmetic number, because the mean of its divisors is an integer number (35335552).

Almost surely, 2^622785156 is an apocalyptic number.

It is an amenable number.

622785156 is an abundant number, since it is smaller than the sum of its proper divisors (1073321340).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

622785156 is a wasteful number, since it uses less digits than its factorization.

622785156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157808 (or 157806 counting only the distinct ones).

The product of its digits is 201600, while the sum is 42.

The square root of 622785156 is about 24955.6638060381. The cubic root of 622785156 is about 853.9768233175.

The spelling of 622785156 in words is "six hundred twenty-two million, seven hundred eighty-five thousand, one hundred fifty-six".