245906565 has 8 divisors (see below), whose sum is σ = 393450528. Its totient is φ = 131150160.

The previous prime is 245906503. The next prime is 245906567. The reversal of 245906565 is 565609542.

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

It is not a de Polignac number, because 245906565 - 2⁹ = 245906053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245906567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8196871 + ... + 8196900.

It is an arithmetic number, because the mean of its divisors is an integer number (49181316).

Almost surely, 2^245906565 is an apocalyptic number.

It is an amenable number.

245906565 is a deficient number, since it is larger than the sum of its proper divisors (147543963).

245906565 is a wasteful number, since it uses less digits than its factorization.

245906565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16393779.

The product of its (nonzero) digits is 324000, while the sum is 42.

The square root of 245906565 is about 15681.4082594645. The cubic root of 245906565 is about 626.5033166301.

The spelling of 245906565 in words is "two hundred forty-five million, nine hundred six thousand, five hundred sixty-five".