85415963 has 4 divisors (see below), whose sum is σ = 89911560. Its totient is φ = 80920368.

The previous prime is 85415959. The next prime is 85415977. The reversal of 85415963 is 36951458.

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 85415963 - 2² = 85415959 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 85415963.

It is not an unprimeable number, because it can be changed into a prime (85415903) 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 3 ways as a sum of consecutive naturals, for example, 2247770 + ... + 2247807.

It is an arithmetic number, because the mean of its divisors is an integer number (22477890).

Almost surely, 2^85415963 is an apocalyptic number.

85415963 is a deficient number, since it is larger than the sum of its proper divisors (4495597).

85415963 is a wasteful number, since it uses less digits than its factorization.

85415963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4495596.

The product of its digits is 129600, while the sum is 41.

The square root of 85415963 is about 9242.0756867708. The cubic root of 85415963 is about 440.3990233584.

The spelling of 85415963 in words is "eighty-five million, four hundred fifteen thousand, nine hundred sixty-three".