916664820 has 48 divisors (see below), whose sum is σ = 2717644608. Its totient is φ = 230064640.

The previous prime is 916664809. The next prime is 916664843. The reversal of 916664820 is 28466619.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 448326 + ... + 450365.

It is an arithmetic number, because the mean of its divisors is an integer number (56617596).

Almost surely, 2^916664820 is an apocalyptic number.

It is an amenable number.

916664820 is an abundant number, since it is smaller than the sum of its proper divisors (1800979788).

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

916664820 is a wasteful number, since it uses less digits than its factorization.

916664820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 898720 (or 898718 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 916664820 is about 30276.4730442633. The cubic root of 916664820 is about 971.4121282231.

The spelling of 916664820 in words is "nine hundred sixteen million, six hundred sixty-four thousand, eight hundred twenty".