997330757 has 8 divisors (see below), whose sum is σ = 1005312000. Its totient is φ = 989378640.

The previous prime is 997330753. The next prime is 997330759. The reversal of 997330757 is 757033799.

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

It is a cyclic number.

It is not a de Polignac number, because 997330757 - 2² = 997330753 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997330753) 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, 64244 + ... + 78242.

It is an arithmetic number, because the mean of its divisors is an integer number (125664000).

Almost surely, 2^997330757 is an apocalyptic number.

It is an amenable number.

997330757 is a deficient number, since it is larger than the sum of its proper divisors (7981243).

997330757 is a wasteful number, since it uses less digits than its factorization.

997330757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14563.

The product of its (nonzero) digits is 1250235, while the sum is 50.

The square root of 997330757 is about 31580.5439630162. The cubic root of 997330757 is about 999.1094595064.

The spelling of 997330757 in words is "nine hundred ninety-seven million, three hundred thirty thousand, seven hundred fifty-seven".