897782201 has 4 divisors (see below), whose sum is σ = 912500004. Its totient is φ = 883064400.

The previous prime is 897782143. The next prime is 897782209. The reversal of 897782201 is 102287798.

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 478515625 + 419266576 = 21875^2 + 20476^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-897782201 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (897782209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7358810 + ... + 7358931.

It is an arithmetic number, because the mean of its divisors is an integer number (228125001).

Almost surely, 2^897782201 is an apocalyptic number.

It is an amenable number.

897782201 is a deficient number, since it is larger than the sum of its proper divisors (14717803).

897782201 is a wasteful number, since it uses less digits than its factorization.

897782201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14717802.

The product of its (nonzero) digits is 112896, while the sum is 44.

The square root of 897782201 is about 29963.0138837868. The cubic root of 897782201 is about 964.6956725128.

The spelling of 897782201 in words is "eight hundred ninety-seven million, seven hundred eighty-two thousand, two hundred one".