1172997 has 24 divisors (see below), whose sum is σ = 1985984. Its totient is φ = 653184.

The previous prime is 1172993. The next prime is 1173001. The reversal of 1172997 is 7992711.

It is an interprime number because it is at equal distance from previous prime (1172993) and next prime (1173001).

It is not a de Polignac number, because 1172997 - 2² = 1172993 is a prime.

1172997 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1172993) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2493 + ... + 2925.

2^1172997 is an apocalyptic number.

It is an amenable number.

1172997 is a deficient number, since it is larger than the sum of its proper divisors (812987).

1172997 is a wasteful number, since it uses less digits than its factorization.

1172997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489 (or 486 counting only the distinct ones).

The product of its digits is 7938, while the sum is 36.

The square root of 1172997 is about 1083.0498603481. The cubic root of 1172997 is about 105.4627197705.

The spelling of 1172997 in words is "one million, one hundred seventy-two thousand, nine hundred ninety-seven".