981996766 has 16 divisors (see below), whose sum is σ = 1499936256. Its totient is φ = 482098176.

The previous prime is 981996749. The next prime is 981996787. The reversal of 981996766 is 667699189.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4710 + ... + 44566.

It is an arithmetic number, because the mean of its divisors is an integer number (93746016).

Almost surely, 2^981996766 is an apocalyptic number.

981996766 is a deficient number, since it is larger than the sum of its proper divisors (517939490).

981996766 is a wasteful number, since it uses less digits than its factorization.

981996766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40083.

The product of its digits is 8817984, while the sum is 61.

The square root of 981996766 is about 31336.8276313988. The cubic root of 981996766 is about 993.9625444878.

The spelling of 981996766 in words is "nine hundred eighty-one million, nine hundred ninety-six thousand, seven hundred sixty-six".