622602644 has 6 divisors (see below), whose sum is σ = 1089554634. Its totient is φ = 311301320.

The previous prime is 622602613. The next prime is 622602647. The reversal of 622602644 is 446206226.

It can be written as a sum of positive squares in only one way, i.e., 535367044 + 87235600 = 23138^2 + 9340^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 622602644.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (622602647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77825327 + ... + 77825334.

It is an arithmetic number, because the mean of its divisors is an integer number (181592439).

Almost surely, 2^622602644 is an apocalyptic number.

It is an amenable number.

622602644 is a deficient number, since it is larger than the sum of its proper divisors (466951990).

622602644 is a wasteful number, since it uses less digits than its factorization.

622602644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155650665 (or 155650663 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

The square root of 622602644 is about 24952.0068130802. The cubic root of 622602644 is about 853.8933936658.

The spelling of 622602644 in words is "six hundred twenty-two million, six hundred two thousand, six hundred forty-four".