622667745 has 36 divisors (see below), whose sum is σ = 1255505940. Its totient is φ = 284647104.

The previous prime is 622667741. The next prime is 622667761. The reversal of 622667745 is 547766226.

622667745 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 152992161 + 469675584 = 12369^2 + 21672^2 .

It is not a de Polignac number, because 622667745 - 2² = 622667741 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 622667745.

It is not an unprimeable number, because it can be changed into a prime (622667741) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 138990 + ... + 143399.

It is an arithmetic number, because the mean of its divisors is an integer number (34875165).

Almost surely, 2^622667745 is an apocalyptic number.

It is an amenable number.

622667745 is an abundant number, since it is smaller than the sum of its proper divisors (632838195).

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

622667745 is a wasteful number, since it uses less digits than its factorization.

622667745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282414 (or 282404 counting only the distinct ones).

The product of its digits is 846720, while the sum is 45.

The square root of 622667745 is about 24953.3113033120. The cubic root of 622667745 is about 853.9231544220.

The spelling of 622667745 in words is "six hundred twenty-two million, six hundred sixty-seven thousand, seven hundred forty-five".