613625506 has 16 divisors (see below), whose sum is σ = 1049550264. Its totient is φ = 266552064.

The previous prime is 613625503. The next prime is 613625513. The reversal of 613625506 is 605526316.

It can be written as a sum of positive squares in 4 ways, for example, as 516425625 + 97199881 = 22725^2 + 9859^2 .

It is a super-2 number, since 2×613625506² = 753072523227512072, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (613625503) 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 7 ways as a sum of consecutive naturals, for example, 693705 + ... + 694588.

Almost surely, 2^613625506 is an apocalyptic number.

613625506 is a deficient number, since it is larger than the sum of its proper divisors (435924758).

613625506 is a wasteful number, since it uses less digits than its factorization.

613625506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1388325.

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 613625506 is about 24771.4655601965. The cubic root of 613625506 is about 849.7694904355.

The spelling of 613625506 in words is "six hundred thirteen million, six hundred twenty-five thousand, five hundred six".