997226 has 4 divisors (see below), whose sum is σ = 1495842. Its totient is φ = 498612.

The previous prime is 997219. The next prime is 997247. The reversal of 997226 is 622799.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 622799 = 367 ⋅1697.

It can be written as a sum of positive squares in only one way, i.e., 748225 + 249001 = 865^2 + 499^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249305 + ... + 249308.

2⁹⁹⁷²²⁶ is an apocalyptic number.

997226 is a deficient number, since it is larger than the sum of its proper divisors (498616).

997226 is a wasteful number, since it uses less digits than its factorization.

997226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498615.

The product of its digits is 13608, while the sum is 35.

The square root of 997226 is about 998.6120367790. The cubic root of 997226 is about 99.9074477005.

The spelling of 997226 in words is "nine hundred ninety-seven thousand, two hundred twenty-six".