85408005 has 16 divisors (see below), whose sum is σ = 136813824. Its totient is φ = 45497280.

The previous prime is 85407979. The next prime is 85408009. The reversal of 85408005 is 50080458.

It is not a de Polignac number, because 85408005 - 2⁶ = 85407941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85408009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12100 + ... + 17810.

It is an arithmetic number, because the mean of its divisors is an integer number (8550864).

Almost surely, 2^85408005 is an apocalyptic number.

It is an amenable number.

85408005 is a deficient number, since it is larger than the sum of its proper divisors (51405819).

85408005 is a wasteful number, since it uses less digits than its factorization.

85408005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6716.

The product of its (nonzero) digits is 6400, while the sum is 30.

The square root of 85408005 is about 9241.6451457519. The cubic root of 85408005 is about 440.3853459607.

The spelling of 85408005 in words is "eighty-five million, four hundred eight thousand, five".