897503666945 has 4 divisors (see below), whose sum is σ = 1077004400340. Its totient is φ = 718002933552.

The previous prime is 897503666929. The next prime is 897503666959. The reversal of 897503666945 is 549666305798.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 616022486641 + 281481180304 = 784871^2 + 530548^2 .

It is a cyclic number.

It is not a de Polignac number, because 897503666945 - 2⁴ = 897503666929 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89750366690 + ... + 89750366699.

It is an arithmetic number, because the mean of its divisors is an integer number (269251100085).

Almost surely, 2^897503666945 is an apocalyptic number.

It is an amenable number.

897503666945 is a deficient number, since it is larger than the sum of its proper divisors (179500733395).

897503666945 is a wasteful number, since it uses less digits than its factorization.

897503666945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179500733394.

The product of its (nonzero) digits is 293932800, while the sum is 68.

The spelling of 897503666945 in words is "eight hundred ninety-seven billion, five hundred three million, six hundred sixty-six thousand, nine hundred forty-five".