897851 has 8 divisors (see below), whose sum is σ = 948480. Its totient is φ = 848232.

The previous prime is 897847. The next prime is 897877. The reversal of 897851 is 158798.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 897851 - 2² = 897847 is a prime.

It is a super-2 number, since 2×897851² = 1612272836402, which contains 22 as substring.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 897851.

It is not an unprimeable number, because it can be changed into a prime (897881) 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 7 ways as a sum of consecutive naturals, for example, 2180 + ... + 2558.

It is an arithmetic number, because the mean of its divisors is an integer number (118560).

2⁸⁹⁷⁸⁵¹ is an apocalyptic number.

897851 is a deficient number, since it is larger than the sum of its proper divisors (50629).

897851 is a wasteful number, since it uses less digits than its factorization.

897851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505.

The product of its digits is 20160, while the sum is 38.

The square root of 897851 is about 947.5499986808. The cubic root of 897851 is about 96.4720314125.

The spelling of 897851 in words is "eight hundred ninety-seven thousand, eight hundred fifty-one".