997277 has 4 divisors (see below), whose sum is σ = 1014240. Its totient is φ = 980316.

The previous prime is 997273. The next prime is 997279. The reversal of 997277 is 772799.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 997277 - 2² = 997273 is a prime.

It is a super-2 number, since 2×997277² = 1989122829458, 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 (997273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8393 + ... + 8510.

It is an arithmetic number, because the mean of its divisors is an integer number (253560).

2⁹⁹⁷²⁷⁷ is an apocalyptic number.

It is an amenable number.

997277 is a deficient number, since it is larger than the sum of its proper divisors (16963).

997277 is a wasteful number, since it uses less digits than its factorization.

997277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16962.

The product of its digits is 55566, while the sum is 41.

The square root of 997277 is about 998.6375718948. The cubic root of 997277 is about 99.9091508226.

The spelling of 997277 in words is "nine hundred ninety-seven thousand, two hundred seventy-seven".