897544235666 has 16 divisors (see below), whose sum is σ = 1451208140928. Its totient is φ = 413871474000.

The previous prime is 897544235663. The next prime is 897544235737. The reversal of 897544235666 is 666532445798.

It is a happy number.

897544235666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (897544235663) 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, 15792410 + ... + 15849141.

It is an arithmetic number, because the mean of its divisors is an integer number (90700508808).

Almost surely, 2^897544235666 is an apocalyptic number.

897544235666 is a deficient number, since it is larger than the sum of its proper divisors (553663905262).

897544235666 is a wasteful number, since it uses less digits than its factorization.

897544235666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31642657.

The product of its digits is 261273600, while the sum is 65.

The spelling of 897544235666 in words is "eight hundred ninety-seven billion, five hundred forty-four million, two hundred thirty-five thousand, six hundred sixty-six".