997090265 has 16 divisors (see below), whose sum is σ = 1280836800. Its totient is φ = 742876992.

The previous prime is 997090261. The next prime is 997090271. The reversal of 997090265 is 562090799.

It is a cyclic number.

It is not a de Polignac number, because 997090265 - 2² = 997090261 is a prime.

It is not an unprimeable number, because it can be changed into a prime (997090261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83342 + ... + 94551.

It is an arithmetic number, because the mean of its divisors is an integer number (80052300).

Almost surely, 2^997090265 is an apocalyptic number.

997090265 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

It is an amenable number.

997090265 is a deficient number, since it is larger than the sum of its proper divisors (283746535).

997090265 is a wasteful number, since it uses less digits than its factorization.

997090265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177976.

The product of its (nonzero) digits is 306180, while the sum is 47.

The square root of 997090265 is about 31576.7361359593. The cubic root of 997090265 is about 999.0291460810.

The spelling of 997090265 in words is "nine hundred ninety-seven million, ninety thousand, two hundred sixty-five".