897923605999 has 24 divisors (see below), whose sum is σ = 1109046984480. Its totient is φ = 722357346816.

The previous prime is 897923605991. The next prime is 897923606011. The reversal of 897923605999 is 999506329798.

It is not a de Polignac number, because 897923605999 - 2³ = 897923605991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (897923605991) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1202262 + ... + 1800355.

It is an arithmetic number, because the mean of its divisors is an integer number (46210291020).

Almost surely, 2^897923605999 is an apocalyptic number.

897923605999 is a deficient number, since it is larger than the sum of its proper divisors (211123378481).

897923605999 is a wasteful number, since it uses less digits than its factorization.

897923605999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3003007 (or 3003000 counting only the distinct ones).

The product of its (nonzero) digits is 595213920, while the sum is 76.

The spelling of 897923605999 in words is "eight hundred ninety-seven billion, nine hundred twenty-three million, six hundred five thousand, nine hundred ninety-nine".