622386978 has 16 divisors (see below), whose sum is σ = 1248062880. Its totient is φ = 206914176.

The previous prime is 622386967. The next prime is 622387069. The reversal of 622386978 is 879683226.

It is a self number, because there is not a number n which added to its sum of digits gives 622386978.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134575 + ... + 139122.

It is an arithmetic number, because the mean of its divisors is an integer number (78003930).

Almost surely, 2^622386978 is an apocalyptic number.

622386978 is an abundant number, since it is smaller than the sum of its proper divisors (625675902).

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

622386978 is a wasteful number, since it uses less digits than its factorization.

622386978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274081.

The product of its digits is 1741824, while the sum is 51.

The square root of 622386978 is about 24947.6848224439. The cubic root of 622386978 is about 853.7947876812.

The spelling of 622386978 in words is "six hundred twenty-two million, three hundred eighty-six thousand, nine hundred seventy-eight".