611334864 has 200 divisors, whose sum is σ = 2050146560. Its totient is φ = 172253952.

The previous prime is 611334853. The next prime is 611334901. The reversal of 611334864 is 468433116.

It is a happy number.

611334864 is a `hidden beast` number, since 611 + 3 + 34 + 8 + 6 + 4 = 666.

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

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 716262 + ... + 717114.

Almost surely, 2^611334864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 611334864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1025073280).

611334864 is an abundant number, since it is smaller than the sum of its proper divisors (1438811696).

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

611334864 is a wasteful number, since it uses less digits than its factorization.

611334864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 959 (or 944 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 611334864 is about 24725.1868344812. The cubic root of 611334864 is about 848.7107856308.

The spelling of 611334864 in words is "six hundred eleven million, three hundred thirty-four thousand, eight hundred sixty-four".