997982758 has 8 divisors (see below), whose sum is σ = 1522346760. Its totient is φ = 490533840.

The previous prime is 997982669. The next prime is 997982837. The reversal of 997982758 is 857289799.

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 997982758.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4228623 + ... + 4228858.

It is an arithmetic number, because the mean of its divisors is an integer number (190293345).

Almost surely, 2^997982758 is an apocalyptic number.

997982758 is a deficient number, since it is larger than the sum of its proper divisors (524364002).

997982758 is a wasteful number, since it uses less digits than its factorization.

997982758 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8457542.

The product of its digits is 22861440, while the sum is 64.

The square root of 997982758 is about 31590.8651036973. The cubic root of 997982758 is about 999.3271333520.

The spelling of 997982758 in words is "nine hundred ninety-seven million, nine hundred eighty-two thousand, seven hundred fifty-eight".