997706255 has 16 divisors (see below), whose sum is σ = 1473536064. Its totient is φ = 631514880.

The previous prime is 997706189. The next prime is 997706261. The reversal of 997706255 is 552607799.

It is not a de Polignac number, because 997706255 - 2¹⁶ = 997640719 is a prime.

It is a super-2 number, since 2×997706255² = 1990835542532250050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 1095926 + ... + 1096835.

It is an arithmetic number, because the mean of its divisors is an integer number (92096004).

Almost surely, 2^997706255 is an apocalyptic number.

997706255 is a deficient number, since it is larger than the sum of its proper divisors (475829809).

997706255 is a wasteful number, since it uses less digits than its factorization.

997706255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2192786.

The product of its (nonzero) digits is 1190700, while the sum is 50.

The square root of 997706255 is about 31586.4884879595. The cubic root of 997706255 is about 999.2348330021.

The spelling of 997706255 in words is "nine hundred ninety-seven million, seven hundred six thousand, two hundred fifty-five".