611764740 has 72 divisors (see below), whose sum is σ = 1860669720. Its totient is φ = 162699264.

The previous prime is 611764709. The next prime is 611764753. The reversal of 611764740 is 47467116.

611764740 is a `hidden beast` number, since 6 + 1 + 1 + 7 + 647 + 4 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 8964036 + 602800704 = 2994^2 + 24552^2 .

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 = 611764695 and 611764704.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65652 + ... + 74388.

It is an arithmetic number, because the mean of its divisors is an integer number (25842635).

Almost surely, 2^611764740 is an apocalyptic number.

611764740 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 611764740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (930334860).

611764740 is an abundant number, since it is smaller than the sum of its proper divisors (1248904980).

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

611764740 is a wasteful number, since it uses less digits than its factorization.

611764740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9141 (or 9136 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 611764740 is about 24733.8783857283. The cubic root of 611764740 is about 848.9096700377.

The spelling of 611764740 in words is "six hundred eleven million, seven hundred sixty-four thousand, seven hundred forty".