622155642 has 16 divisors (see below), whose sum is σ = 1244706240. Its totient is φ = 207319392.

The previous prime is 622155641. The next prime is 622155659. The reversal of 622155642 is 246551226.

It is not an unprimeable number, because it can be changed into a prime (622155641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6483 + ... + 35865.

It is an arithmetic number, because the mean of its divisors is an integer number (77794140).

Almost surely, 2^622155642 is an apocalyptic number.

622155642 is an abundant number, since it is smaller than the sum of its proper divisors (622550598).

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

622155642 is a wasteful number, since it uses less digits than its factorization.

622155642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32917.

The product of its digits is 28800, while the sum is 33.

The square root of 622155642 is about 24943.0479693240. The cubic root of 622155642 is about 853.6889917940.

The spelling of 622155642 in words is "six hundred twenty-two million, one hundred fifty-five thousand, six hundred forty-two".