897667905 has 16 divisors (see below), whose sum is σ = 1438283520. Its totient is φ = 478084608.

The previous prime is 897667889. The next prime is 897667907. The reversal of 897667905 is 509766798.

It is not a de Polignac number, because 897667905 - 2⁴ = 897667889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (897667907) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30832 + ... + 52401.

It is an arithmetic number, because the mean of its divisors is an integer number (89892720).

Almost surely, 2^897667905 is an apocalyptic number.

It is an amenable number.

897667905 is a deficient number, since it is larger than the sum of its proper divisors (540615615).

897667905 is a wasteful number, since it uses less digits than its factorization.

897667905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83960.

The product of its (nonzero) digits is 5715360, while the sum is 57.

The square root of 897667905 is about 29961.1065383106. The cubic root of 897667905 is about 964.6547325402.

The spelling of 897667905 in words is "eight hundred ninety-seven million, six hundred sixty-seven thousand, nine hundred five".