997011 has 12 divisors (see below), whose sum is σ = 1471392. Its totient is φ = 650256.

The previous prime is 997001. The next prime is 997013. The reversal of 997011 is 110799.

It is not a de Polignac number, because 997011 - 2⁵ = 996979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (997013) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 756 + ... + 1601.

It is an arithmetic number, because the mean of its divisors is an integer number (122616).

2⁹⁹⁷⁰¹¹ is an apocalyptic number.

997011 is a deficient number, since it is larger than the sum of its proper divisors (474381).

997011 is a wasteful number, since it uses less digits than its factorization.

997011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2410 (or 2407 counting only the distinct ones).

The product of its (nonzero) digits is 567, while the sum is 27.

The square root of 997011 is about 998.5043815627. The cubic root of 997011 is about 99.9002672335.

Adding to 997011 its product of nonzero digits (567), we get a triangular number (997578 = T₁₄₁₂).

It can be divided in two parts, 9 and 97011, that added together give a triangular number (97020 = T₄₄₀).

The spelling of 997011 in words is "nine hundred ninety-seven thousand, eleven".