997982694 has 40 divisors (see below), whose sum is σ = 2247643728. Its totient is φ = 330961680.

The previous prime is 997982669. The next prime is 997982837. The reversal of 997982694 is 496289799.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 16279 + ... + 47549.

Almost surely, 2^997982694 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 997982694, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1123821864).

997982694 is an abundant number, since it is smaller than the sum of its proper divisors (1249661034).

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

997982694 is a wasteful number, since it uses less digits than its factorization.

997982694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31482 (or 31473 counting only the distinct ones).

The product of its digits is 17635968, while the sum is 63.

The square root of 997982694 is about 31590.8640907462. The cubic root of 997982694 is about 999.3271119899.

The spelling of 997982694 in words is "nine hundred ninety-seven million, nine hundred eighty-two thousand, six hundred ninety-four".