897719 has 4 divisors (see below), whose sum is σ = 950544. Its totient is φ = 844896.

The previous prime is 897709. The next prime is 897727. The reversal of 897719 is 917798.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 897719 - 2⁴ = 897703 is a prime.

It is a super-2 number, since 2×897719² = 1611798805922, 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 (897709) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 26387 + ... + 26420.

It is an arithmetic number, because the mean of its divisors is an integer number (237636).

2⁸⁹⁷⁷¹⁹ is an apocalyptic number.

897719 is a deficient number, since it is larger than the sum of its proper divisors (52825).

897719 is a wasteful number, since it uses less digits than its factorization.

897719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52824.

The product of its digits is 31752, while the sum is 41.

The square root of 897719 is about 947.4803428040. The cubic root of 897719 is about 96.4673034817.

The spelling of 897719 in words is "eight hundred ninety-seven thousand, seven hundred nineteen".