245643117 has 8 divisors (see below), whose sum is σ = 327696000. Its totient is φ = 163676160.

The previous prime is 245643113. The next prime is 245643121. The reversal of 245643117 is 711346542.

It is an interprime number because it is at equal distance from previous prime (245643113) and next prime (245643121).

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

It is not a de Polignac number, because 245643117 - 2² = 245643113 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245643113) 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, 14484 + ... + 26477.

It is an arithmetic number, because the mean of its divisors is an integer number (40962000).

Almost surely, 2^245643117 is an apocalyptic number.

It is an amenable number.

245643117 is a deficient number, since it is larger than the sum of its proper divisors (82052883).

245643117 is a wasteful number, since it uses less digits than its factorization.

245643117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42963.

The product of its digits is 20160, while the sum is 33.

The square root of 245643117 is about 15673.0059975743. The cubic root of 245643117 is about 626.2795053051.

Adding to 245643117 its reverse (711346542), we get a palindrome (956989659).

The spelling of 245643117 in words is "two hundred forty-five million, six hundred forty-three thousand, one hundred seventeen".