613713720 has 64 divisors (see below), whose sum is σ = 1846823040. Its totient is φ = 163152000.

The previous prime is 613713713. The next prime is 613713739. The reversal of 613713720 is 27317316.

It is a super-4 number, since 4×613713720⁴ (a number of 36 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31995 + ... + 47445.

It is an arithmetic number, because the mean of its divisors is an integer number (28856610).

Almost surely, 2^613713720 is an apocalyptic number.

613713720 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 613713720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (923411520).

613713720 is an abundant number, since it is smaller than the sum of its proper divisors (1233109320).

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

613713720 is a wasteful number, since it uses less digits than its factorization.

613713720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15796 (or 15792 counting only the distinct ones).

The product of its (nonzero) digits is 5292, while the sum is 30.

The square root of 613713720 is about 24773.2460529499. The cubic root of 613713720 is about 849.8102090677.

The spelling of 613713720 in words is "six hundred thirteen million, seven hundred thirteen thousand, seven hundred twenty".