997672497 has 8 divisors (see below), whose sum is σ = 1339940256. Its totient is φ = 660259872.

The previous prime is 997672483. The next prime is 997672499. The reversal of 997672497 is 794276799.

It is a happy number.

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

It is not a de Polignac number, because 997672497 - 2²⁴ = 980895281 is a prime.

It is a super-2 number, since 2×997672497² = 1990700822540430018, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 997672497.

It is not an unprimeable number, because it can be changed into a prime (997672499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1213303 + ... + 1214124.

It is an arithmetic number, because the mean of its divisors is an integer number (167492532).

Almost surely, 2^997672497 is an apocalyptic number.

It is an amenable number.

997672497 is a deficient number, since it is larger than the sum of its proper divisors (342267759).

997672497 is a wasteful number, since it uses less digits than its factorization.

997672497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2427567.

The product of its digits is 12002256, while the sum is 60.

The square root of 997672497 is about 31585.9541093822. The cubic root of 997672497 is about 999.2235629682.

The spelling of 997672497 in words is "nine hundred ninety-seven million, six hundred seventy-two thousand, four hundred ninety-seven".