994207680 has 168 divisors, whose sum is σ = 3599840400. Its totient is φ = 251154432.

The previous prime is 994207657. The next prime is 994207691. The reversal of 994207680 is 86702499.

It is a happy number.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45636 + ... + 63804.

Almost surely, 2^994207680 is an apocalyptic number.

994207680 is a gapful number since it is divisible by the number (90) 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 994207680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1799920200).

994207680 is an abundant number, since it is smaller than the sum of its proper divisors (2605632720).

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

994207680 is a wasteful number, since it uses less digits than its factorization.

994207680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18211 (or 18198 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 994207680 is about 31531.0589736533. The cubic root of 994207680 is about 998.0654867383.

The spelling of 994207680 in words is "nine hundred ninety-four million, two hundred seven thousand, six hundred eighty".