697881 has 8 divisors (see below), whose sum is σ = 934560. Its totient is φ = 463232.

The previous prime is 697877. The next prime is 697891. The reversal of 697881 is 188796.

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 697881 - 2² = 697877 is a prime.

It is a super-2 number, since 2×697881² = 974075780322, which contains 22 as substring.

It is a nialpdrome in base 15.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 697881.

It is not an unprimeable number, because it can be changed into a prime (697831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 730 + ... + 1388.

It is an arithmetic number, because the mean of its divisors is an integer number (116820).

2⁶⁹⁷⁸⁸¹ is an apocalyptic number.

It is an amenable number.

697881 is a deficient number, since it is larger than the sum of its proper divisors (236679).

697881 is a wasteful number, since it uses less digits than its factorization.

697881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1015.

The product of its digits is 24192, while the sum is 39.

The square root of 697881 is about 835.3927220176. The cubic root of 697881 is about 88.7007158757.

The spelling of 697881 in words is "six hundred ninety-seven thousand, eight hundred eighty-one".