660461076 has 216 divisors, whose sum is σ = 1948873472. Its totient is φ = 188179200.

The previous prime is 660461057. The next prime is 660461083. The reversal of 660461076 is 670164066.

It is a super-2 number, since 2×660461076² = 872417665822155552, which contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 660461076.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 9047376 + ... + 9047448.

Almost surely, 2^660461076 is an apocalyptic number.

660461076 is a gapful number since it is divisible by the number (66) 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 660461076, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (974436736).

660461076 is an abundant number, since it is smaller than the sum of its proper divisors (1288412396).

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

660461076 is a wasteful number, since it uses less digits than its factorization.

660461076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203 (or 187 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 660461076 is about 25699.4372701038. The cubic root of 660461076 is about 870.8614693279.

The spelling of 660461076 in words is "six hundred sixty million, four hundred sixty-one thousand, seventy-six".