613397550 has 48 divisors (see below), whose sum is σ = 1522759680. Its totient is φ = 163407840.

The previous prime is 613397549. The next prime is 613397573. The reversal of 613397550 is 55793316.

613397550 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 613397499 and 613397508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 248221 + ... + 250679.

It is an arithmetic number, because the mean of its divisors is an integer number (31724160).

Almost surely, 2^613397550 is an apocalyptic number.

613397550 is an abundant number, since it is smaller than the sum of its proper divisors (909362130).

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

613397550 is a wasteful number, since it uses less digits than its factorization.

613397550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4137 (or 4132 counting only the distinct ones).

The product of its (nonzero) digits is 85050, while the sum is 39.

The square root of 613397550 is about 24766.8639516593. The cubic root of 613397550 is about 849.6642503261.

The spelling of 613397550 in words is "six hundred thirteen million, three hundred ninety-seven thousand, five hundred fifty".