613625620 has 12 divisors (see below), whose sum is σ = 1288613844. Its totient is φ = 245450240.

The previous prime is 613625611. The next prime is 613625629. The reversal of 613625620 is 26526316.

It is an interprime number because it is at equal distance from previous prime (613625611) and next prime (613625629).

It can be written as a sum of positive squares in 2 ways, for example, as 443270916 + 170354704 = 21054^2 + 13052^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (613625629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15340621 + ... + 15340660.

It is an arithmetic number, because the mean of its divisors is an integer number (107384487).

Almost surely, 2^613625620 is an apocalyptic number.

It is an amenable number.

613625620 is an abundant number, since it is smaller than the sum of its proper divisors (674988224).

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

613625620 is a wasteful number, since it uses less digits than its factorization.

613625620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30681290 (or 30681288 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 613625620 is about 24771.4678612310. The cubic root of 613625620 is about 849.7695430592.

The spelling of 613625620 in words is "six hundred thirteen million, six hundred twenty-five thousand, six hundred twenty".