85903615 has 24 divisors (see below), whose sum is σ = 120321072. Its totient is φ = 58705920.

The previous prime is 85903613. The next prime is 85903621. The reversal of 85903615 is 51630958.

It is not a de Polignac number, because 85903615 - 2¹ = 85903613 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 (85903613) 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 23 ways as a sum of consecutive naturals, for example, 133695 + ... + 134335.

It is an arithmetic number, because the mean of its divisors is an integer number (5013378).

Almost surely, 2^85903615 is an apocalyptic number.

85903615 is a deficient number, since it is larger than the sum of its proper divisors (34417457).

85903615 is a wasteful number, since it uses less digits than its factorization.

85903615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1207 (or 1200 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 85903615 is about 9268.4203076900. The cubic root of 85903615 is about 441.2355338772.

The spelling of 85903615 in words is "eighty-five million, nine hundred three thousand, six hundred fifteen".