981632306 has 8 divisors (see below), whose sum is σ = 1476397164. Its totient is φ = 489499920.

The previous prime is 981632303. The next prime is 981632347. The reversal of 981632306 is 603236189.

It can be written as a sum of positive squares in 2 ways, for example, as 970011025 + 11621281 = 31145^2 + 3409^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 981632306.

It is not an unprimeable number, because it can be changed into a prime (981632303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 657185 + ... + 658676.

Almost surely, 2^981632306 is an apocalyptic number.

981632306 is a deficient number, since it is larger than the sum of its proper divisors (494764858).

981632306 is a wasteful number, since it uses less digits than its factorization.

981632306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1316236.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 981632306 is about 31331.0118891810. The cubic root of 981632306 is about 993.8395622719.

The spelling of 981632306 in words is "nine hundred eighty-one million, six hundred thirty-two thousand, three hundred six".