85619903 has 4 divisors (see below), whose sum is σ = 86897880. Its totient is φ = 84341928.

The previous prime is 85619899. The next prime is 85619927. The reversal of 85619903 is 30991658.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30991658 = 2 ⋅15495829.

It is a cyclic number.

It is not a de Polignac number, because 85619903 - 2² = 85619899 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 (85619953) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 638888 + ... + 639021.

It is an arithmetic number, because the mean of its divisors is an integer number (21724470).

Almost surely, 2^85619903 is an apocalyptic number.

85619903 is a deficient number, since it is larger than the sum of its proper divisors (1277977).

85619903 is a wasteful number, since it uses less digits than its factorization.

85619903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1277976.

The product of its (nonzero) digits is 58320, while the sum is 41.

The square root of 85619903 is about 9253.1023446193. The cubic root of 85619903 is about 440.7492451331.

The spelling of 85619903 in words is "eighty-five million, six hundred nineteen thousand, nine hundred three".