994421680 has 60 divisors (see below), whose sum is σ = 2689515360. Its totient is φ = 340943232.

The previous prime is 994421663. The next prime is 994421683. The reversal of 994421680 is 86124499.

It is not an unprimeable number, because it can be changed into a prime (994421683) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 122920 + ... + 130759.

It is an arithmetic number, because the mean of its divisors is an integer number (44825256).

Almost surely, 2^994421680 is an apocalyptic number.

It is an amenable number.

994421680 is an abundant number, since it is smaller than the sum of its proper divisors (1695093680).

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

994421680 is a wasteful number, since it uses less digits than its factorization.

994421680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253706 (or 253693 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 994421680 is about 31534.4522704930. The cubic root of 994421680 is about 998.1370917278.

The spelling of 994421680 in words is "nine hundred ninety-four million, four hundred twenty-one thousand, six hundred eighty".