997867298 has 8 divisors (see below), whose sum is σ = 1496966508. Its totient is φ = 498878464.

The previous prime is 997867291. The next prime is 997867301. The reversal of 997867298 is 892768799.

It can be written as a sum of positive squares in 2 ways, for example, as 839434729 + 158432569 = 28973^2 + 12587^2 .

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

It is not an unprimeable number, because it can be changed into a prime (997867291) 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, 890 + ... + 44682.

Almost surely, 2^997867298 is an apocalyptic number.

997867298 is a deficient number, since it is larger than the sum of its proper divisors (499099210).

997867298 is a wasteful number, since it uses less digits than its factorization.

997867298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55188.

The product of its digits is 27433728, while the sum is 65.

The square root of 997867298 is about 31589.0376238340. The cubic root of 997867298 is about 999.2885933539.

The spelling of 997867298 in words is "nine hundred ninety-seven million, eight hundred sixty-seven thousand, two hundred ninety-eight".