245842861 has 8 divisors (see below), whose sum is σ = 269744544. Its totient is φ = 222199920.

The previous prime is 245842823. The next prime is 245842867. The reversal of 245842861 is 168248542.

It is a happy number.

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 245842861 - 2⁷ = 245842733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245842867) 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, 62691 + ... + 66496.

It is an arithmetic number, because the mean of its divisors is an integer number (33718068).

Almost surely, 2^245842861 is an apocalyptic number.

It is an amenable number.

245842861 is a deficient number, since it is larger than the sum of its proper divisors (23901683).

245842861 is a wasteful number, since it uses less digits than its factorization.

245842861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129371.

The product of its digits is 122880, while the sum is 40.

The square root of 245842861 is about 15679.3769327738. The cubic root of 245842861 is about 626.4492117791.

The spelling of 245842861 in words is "two hundred forty-five million, eight hundred forty-two thousand, eight hundred sixty-one".