245620017 has 6 divisors (see below), whose sum is σ = 354784482. Its totient is φ = 163746672.

The previous prime is 245620003. The next prime is 245620019. The reversal of 245620017 is 710026542.

245620017 is a `hidden beast` number, since 2 + 456 + 200 + 1 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 242238096 + 3381921 = 15564^2 + 1839^2 .

It is not a de Polignac number, because 245620017 - 2⁶ = 245619953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (245620019) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13645548 + ... + 13645565.

It is an arithmetic number, because the mean of its divisors is an integer number (59130747).

Almost surely, 2^245620017 is an apocalyptic number.

It is an amenable number.

245620017 is a deficient number, since it is larger than the sum of its proper divisors (109164465).

245620017 is a wasteful number, since it uses less digits than its factorization.

245620017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27291119 (or 27291116 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 245620017 is about 15672.2690443981. The cubic root of 245620017 is about 626.2598731516.

Adding to 245620017 its reverse (710026542), we get a palindrome (955646559).

The spelling of 245620017 in words is "two hundred forty-five million, six hundred twenty thousand, seventeen".