994161660 has 48 divisors (see below), whose sum is σ = 2904685056. Its totient is φ = 253582912.

The previous prime is 994161659. The next prime is 994161689. The reversal of 994161660 is 66161499.

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, 358824 + ... + 361583.

It is an arithmetic number, because the mean of its divisors is an integer number (60514272).

Almost surely, 2^994161660 is an apocalyptic number.

It is an amenable number.

994161660 is an abundant number, since it is smaller than the sum of its proper divisors (1910523396).

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

994161660 is a wasteful number, since it uses less digits than its factorization.

994161660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720442 (or 720440 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 994161660 is about 31530.3292085573. The cubic root of 994161660 is about 998.0500869772.

The spelling of 994161660 in words is "nine hundred ninety-four million, one hundred sixty-one thousand, six hundred sixty".