997023086 has 4 divisors (see below), whose sum is σ = 1495534632. Its totient is φ = 498511542.

The previous prime is 997023073. The next prime is 997023151. The reversal of 997023086 is 680320799.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249255770 + ... + 249255773.

It is an arithmetic number, because the mean of its divisors is an integer number (373883658).

Almost surely, 2^997023086 is an apocalyptic number.

997023086 is a deficient number, since it is larger than the sum of its proper divisors (498511546).

997023086 is a wasteful number, since it uses less digits than its factorization.

997023086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498511545.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 997023086 is about 31575.6723760556. The cubic root of 997023086 is about 999.0067090331.

The spelling of 997023086 in words is "nine hundred ninety-seven million, twenty-three thousand, eighty-six".