622455642 has 24 divisors (see below), whose sum is σ = 1350928800. Its totient is φ = 207135240.

The previous prime is 622455619. The next prime is 622455643. The reversal of 622455642 is 246554226.

622455642 is a `hidden beast` number, since 6 + 2 + 2 + 4 + 5 + 5 + 642 = 666.

It is a super-4 number, since 4×622455642⁴ (a number of 36 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 622455597 and 622455606.

It is not an unprimeable number, because it can be changed into a prime (622455643) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18084 + ... + 39647.

It is an arithmetic number, because the mean of its divisors is an integer number (56288700).

Almost surely, 2^622455642 is an apocalyptic number.

622455642 is an abundant number, since it is smaller than the sum of its proper divisors (728473158).

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

622455642 is a wasteful number, since it uses less digits than its factorization.

622455642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58338 (or 58335 counting only the distinct ones).

The product of its digits is 115200, while the sum is 36.

The square root of 622455642 is about 24949.0609442520. The cubic root of 622455642 is about 853.8261844443.

The spelling of 622455642 in words is "six hundred twenty-two million, four hundred fifty-five thousand, six hundred forty-two".