997270761 has 8 divisors (see below), whose sum is σ = 1351492864. Its totient is φ = 653947920.

The previous prime is 997270733. The next prime is 997270787. The reversal of 997270761 is 167072799.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 997270761 - 2⁹ = 997270249 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 997270761.

It is not an unprimeable number, because it can be changed into a prime (997270661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2724601 + ... + 2724966.

It is an arithmetic number, because the mean of its divisors is an integer number (168936608).

Almost surely, 2^997270761 is an apocalyptic number.

It is an amenable number.

997270761 is a deficient number, since it is larger than the sum of its proper divisors (354222103).

997270761 is a wasteful number, since it uses less digits than its factorization.

997270761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5449631.

The product of its (nonzero) digits is 333396, while the sum is 48.

The square root of 997270761 is about 31579.5940600889. The cubic root of 997270761 is about 999.0894247711.

The spelling of 997270761 in words is "nine hundred ninety-seven million, two hundred seventy thousand, seven hundred sixty-one".