996403680 has 120 divisors (see below), whose sum is σ = 3516520392. Its totient is φ = 265704192.

The previous prime is 996403669. The next prime is 996403687. The reversal of 996403680 is 86304699.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (996403687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 25482 + ... + 51401.

Almost surely, 2^996403680 is an apocalyptic number.

996403680 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

996403680 is an abundant number, since it is smaller than the sum of its proper divisors (2520116712).

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

996403680 is a wasteful number, since it uses less digits than its factorization.

996403680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76910 (or 76893 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The square root of 996403680 is about 31565.8625733560. The cubic root of 996403680 is about 998.7997867311.

The spelling of 996403680 in words is "nine hundred ninety-six million, four hundred three thousand, six hundred eighty".