997976755 has 16 divisors (see below), whose sum is σ = 1268974944. Its totient is φ = 750850560.

The previous prime is 997976747. The next prime is 997976761. The reversal of 997976755 is 557679799.

It is not a de Polignac number, because 997976755 - 2³ = 997976747 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134164 + ... + 141406.

It is an arithmetic number, because the mean of its divisors is an integer number (79310934).

Almost surely, 2^997976755 is an apocalyptic number.

997976755 is a deficient number, since it is larger than the sum of its proper divisors (270998189).

997976755 is a wasteful number, since it uses less digits than its factorization.

997976755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8886.

The product of its digits is 37507050, while the sum is 64.

The square root of 997976755 is about 31590.7700919113. The cubic root of 997976755 is about 999.3251296525.

The spelling of 997976755 in words is "nine hundred ninety-seven million, nine hundred seventy-six thousand, seven hundred fifty-five".