613086840 has 64 divisors (see below), whose sum is σ = 2043626400. Its totient is φ = 163489536.

The previous prime is 613086839. The next prime is 613086841. The reversal of 613086840 is 48680316.

It is a happy number.

613086840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (613086839) and next prime (613086841).

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

It is a junction number, because it is equal to n+sod(n) for n = 613086795 and 613086804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (613086841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 282757 + ... + 284916.

Almost surely, 2^613086840 is an apocalyptic number.

613086840 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

613086840 is an abundant number, since it is smaller than the sum of its proper divisors (1430539560).

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

613086840 is a wasteful number, since it uses less digits than its factorization.

613086840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567693 (or 567683 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 613086840 is about 24760.5904614571. The cubic root of 613086840 is about 849.5207633020.

The spelling of 613086840 in words is "six hundred thirteen million, eighty-six thousand, eight hundred forty".