997098774 has 32 divisors (see below), whose sum is σ = 2286302976. Its totient is φ = 283982880.

The previous prime is 997098763. The next prime is 997098797. The reversal of 997098774 is 477890799.

It is a super-2 number, since 2×997098774² = 1988411930224606152, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24132 + ... + 50759.

It is an arithmetic number, because the mean of its divisors is an integer number (71446968).

Almost surely, 2^997098774 is an apocalyptic number.

997098774 is an abundant number, since it is smaller than the sum of its proper divisors (1289204202).

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

997098774 is a wasteful number, since it uses less digits than its factorization.

997098774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75220.

The product of its (nonzero) digits is 8001504, while the sum is 60.

The square root of 997098774 is about 31576.8708709397. The cubic root of 997098774 is about 999.0319879216.

The spelling of 997098774 in words is "nine hundred ninety-seven million, ninety-eight thousand, seven hundred seventy-four".