613640606274 has 80 divisors (see below), whose sum is σ = 1426457011320. Its totient is φ = 196933524480.

The previous prime is 613640606251. The next prime is 613640606353. The reversal of 613640606274 is 472606046316.

It is a happy number.

613640606274 is a `hidden beast` number, since 6 + 1 + 36 + 4 + 0 + 606 + 2 + 7 + 4 = 666.

613640606274 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 413200839249 + 200439767025 = 642807^2 + 447705^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1473384 + ... + 1843404.

Almost surely, 2^613640606274 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 613640606274, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (713228505660).

613640606274 is an abundant number, since it is smaller than the sum of its proper divisors (812816405046).

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

613640606274 is a wasteful number, since it uses less digits than its factorization.

613640606274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370417 (or 370408 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 45.

The spelling of 613640606274 in words is "six hundred thirteen billion, six hundred forty million, six hundred six thousand, two hundred seventy-four".