613672020 has 72 divisors (see below), whose sum is σ = 2004669576. Its totient is φ = 151057152.

The previous prime is 613672019. The next prime is 613672057. The reversal of 613672020 is 20276316.

It is a happy number.

613672020 is a `hidden beast` number, since 613 + 6 + 7 + 20 + 20 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 18507204 + 595164816 = 4302^2 + 24396^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 128787 + ... + 133466.

It is an arithmetic number, because the mean of its divisors is an integer number (27842633).

Almost surely, 2^613672020 is an apocalyptic number.

613672020 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

613672020 is an abundant number, since it is smaller than the sum of its proper divisors (1390997556).

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

613672020 is a wasteful number, since it uses less digits than its factorization.

613672020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262281 (or 262276 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 613672020 is about 24772.4044049018. The cubic root of 613672020 is about 849.7909612832.

The spelling of 613672020 in words is "six hundred thirteen million, six hundred seventy-two thousand, twenty".