622748612 has 6 divisors (see below), whose sum is σ = 1089810078. Its totient is φ = 311374304.

The previous prime is 622748611. The next prime is 622748663. The reversal of 622748612 is 216847226.

It can be written as a sum of positive squares in only one way, i.e., 619810816 + 2937796 = 24896^2 + 1714^2 .

It is not an unprimeable number, because it can be changed into a prime (622748611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77843573 + ... + 77843580.

It is an arithmetic number, because the mean of its divisors is an integer number (181635013).

Almost surely, 2^622748612 is an apocalyptic number.

It is an amenable number.

622748612 is a deficient number, since it is larger than the sum of its proper divisors (467061466).

622748612 is a wasteful number, since it uses less digits than its factorization.

622748612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155687157 (or 155687155 counting only the distinct ones).

The product of its digits is 64512, while the sum is 38.

The square root of 622748612 is about 24954.9316168167. The cubic root of 622748612 is about 853.9601196762.

The spelling of 622748612 in words is "six hundred twenty-two million, seven hundred forty-eight thousand, six hundred twelve".