245988887 has 4 divisors (see below), whose sum is σ = 256684080. Its totient is φ = 235293696.

The previous prime is 245988851. The next prime is 245988907. The reversal of 245988887 is 788889542.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 245988887 - 2¹⁸ = 245726743 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 (245982887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5347562 + ... + 5347607.

It is an arithmetic number, because the mean of its divisors is an integer number (64171020).

Almost surely, 2^245988887 is an apocalyptic number.

245988887 is a deficient number, since it is larger than the sum of its proper divisors (10695193).

245988887 is a wasteful number, since it uses less digits than its factorization.

245988887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10695192.

The product of its digits is 10321920, while the sum is 59.

The square root of 245988887 is about 15684.0328678564. The cubic root of 245988887 is about 626.5732202157.

The spelling of 245988887 in words is "two hundred forty-five million, nine hundred eighty-eight thousand, eight hundred eighty-seven".