613661076 has 96 divisors (see below), whose sum is σ = 1827840000. Its totient is φ = 174407904.

The previous prime is 613661057. The next prime is 613661099. The reversal of 613661076 is 670166316.

613661076 is a `hidden beast` number, since 6 + 1 + 36 + 610 + 7 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 613661076.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 148405 + ... + 152483.

It is an arithmetic number, because the mean of its divisors is an integer number (19040000).

Almost surely, 2^613661076 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 613661076, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (913920000).

613661076 is an abundant number, since it is smaller than the sum of its proper divisors (1214178924).

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

613661076 is a wasteful number, since it uses less digits than its factorization.

613661076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4298 (or 4290 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 613661076 is about 24772.1835129647. The cubic root of 613661076 is about 849.7859096338.

The spelling of 613661076 in words is "six hundred thirteen million, six hundred sixty-one thousand, seventy-six".