997348877 has 8 divisors (see below), whose sum is σ = 1206876096. Its totient is φ = 804583872.

The previous prime is 997348873. The next prime is 997348879. The reversal of 997348877 is 778843799.

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 997348877 - 2² = 997348873 is a prime.

It is a super-2 number, since 2×997348877² = 1989409564906322258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997348873) 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, 4190423 + ... + 4190660.

It is an arithmetic number, because the mean of its divisors is an integer number (150859512).

Almost surely, 2^997348877 is an apocalyptic number.

It is an amenable number.

997348877 is a deficient number, since it is larger than the sum of its proper divisors (209527219).

997348877 is a wasteful number, since it uses less digits than its factorization.

997348877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8381107.

The product of its digits is 21337344, while the sum is 62.

The square root of 997348877 is about 31580.8308472086. The cubic root of 997348877 is about 999.1155102419.

The spelling of 997348877 in words is "nine hundred ninety-seven million, three hundred forty-eight thousand, eight hundred seventy-seven".