997023085 has 12 divisors (see below), whose sum is σ = 1236273084. Its totient is φ = 771885120.

The previous prime is 997023073. The next prime is 997023151. The reversal of 997023085 is 580320799.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 674856484 + 322166601 = 25978^2 + 17949^2 .

It is not a de Polignac number, because 997023085 - 2⁹ = 997022573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 98944 + ... + 108553.

It is an arithmetic number, because the mean of its divisors is an integer number (103022757).

Almost surely, 2^997023085 is an apocalyptic number.

It is an amenable number.

997023085 is a deficient number, since it is larger than the sum of its proper divisors (239249999).

997023085 is a wasteful number, since it uses less digits than its factorization.

997023085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207564 (or 207533 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 997023085 is about 31575.6723602206. The cubic root of 997023085 is about 999.0067086991.

The spelling of 997023085 in words is "nine hundred ninety-seven million, twenty-three thousand, eighty-five".