622149078 has 16 divisors (see below), whose sum is σ = 1244542896. Its totient is φ = 207342240.

The previous prime is 622149061. The next prime is 622149083. The reversal of 622149078 is 870941226.

It is a congruent number.

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, 52600 + ... + 63332.

It is an arithmetic number, because the mean of its divisors is an integer number (77783931).

Almost surely, 2^622149078 is an apocalyptic number.

622149078 is an abundant number, since it is smaller than the sum of its proper divisors (622393818).

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

622149078 is a wasteful number, since it uses less digits than its factorization.

622149078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20399.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 622149078 is about 24942.9163892276. The cubic root of 622149078 is about 853.6859895259.

The spelling of 622149078 in words is "six hundred twenty-two million, one hundred forty-nine thousand, seventy-eight".