997276157 has 8 divisors (see below), whose sum is σ = 1032961440. Its totient is φ = 961677360.

The previous prime is 997276103. The next prime is 997276177. The reversal of 997276157 is 751672799.

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 997276157 - 2¹² = 997272061 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 997276099 and 997276108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997276177) 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, 2318 + ... + 44720.

It is an arithmetic number, because the mean of its divisors is an integer number (129120180).

Almost surely, 2^997276157 is an apocalyptic number.

It is an amenable number.

997276157 is a deficient number, since it is larger than the sum of its proper divisors (35685283).

997276157 is a wasteful number, since it uses less digits than its factorization.

997276157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43243.

The product of its digits is 1666980, while the sum is 53.

The square root of 997276157 is about 31579.6794948904. The cubic root of 997276157 is about 999.0912267146.

The spelling of 997276157 in words is "nine hundred ninety-seven million, two hundred seventy-six thousand, one hundred fifty-seven".