245647897 has 8 divisors (see below), whose sum is σ = 273681792. Its totient is φ = 218564400.

The previous prime is 245647877. The next prime is 245647901. The reversal of 245647897 is 798746542.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 245647897 - 2¹⁵ = 245615129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245647817) 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, 237054 + ... + 238087.

It is an arithmetic number, because the mean of its divisors is an integer number (34210224).

Almost surely, 2^245647897 is an apocalyptic number.

It is an amenable number.

245647897 is a deficient number, since it is larger than the sum of its proper divisors (28033895).

245647897 is a wasteful number, since it uses less digits than its factorization.

245647897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475199.

The product of its digits is 3386880, while the sum is 52.

The square root of 245647897 is about 15673.1584883201. The cubic root of 245647897 is about 626.2835675623.

The spelling of 245647897 in words is "two hundred forty-five million, six hundred forty-seven thousand, eight hundred ninety-seven".