897655 has 16 divisors (see below), whose sum is σ = 1238400. Its totient is φ = 617760.

The previous prime is 897649. The next prime is 897671. The reversal of 897655 is 556798.

It is a happy number.

It is not a de Polignac number, because 897655 - 2³ = 897647 is a prime.

It is a congruent number.

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 in 15 ways as a sum of consecutive naturals, for example, 616 + ... + 1474.

It is an arithmetic number, because the mean of its divisors is an integer number (77400).

2⁸⁹⁷⁶⁵⁵ is an apocalyptic number.

897655 is a deficient number, since it is larger than the sum of its proper divisors (340745).

897655 is a wasteful number, since it uses less digits than its factorization.

897655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894.

The product of its digits is 75600, while the sum is 40.

The square root of 897655 is about 947.4465684143. The cubic root of 897655 is about 96.4650109847.

It can be divided in two parts, 89 and 7655, that added together give a square (7744 = 88²).

The spelling of 897655 in words is "eight hundred ninety-seven thousand, six hundred fifty-five".