613454820 has 96 divisors (see below), whose sum is σ = 1924546176. Its totient is φ = 144691200.

The previous prime is 613454789. The next prime is 613454887. The reversal of 613454820 is 28454316.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (33).

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, 11860 + ... + 36980.

It is an arithmetic number, because the mean of its divisors is an integer number (20047356).

Almost surely, 2^613454820 is an apocalyptic number.

613454820 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 613454820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (962273088).

613454820 is an abundant number, since it is smaller than the sum of its proper divisors (1311091356).

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

613454820 is a wasteful number, since it uses less digits than its factorization.

613454820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25181 (or 25179 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 613454820 is about 24768.0201065810. The cubic root of 613454820 is about 849.6906925344.

The spelling of 613454820 in words is "six hundred thirteen million, four hundred fifty-four thousand, eight hundred twenty".