85890145 has 8 divisors (see below), whose sum is σ = 112438080. Its totient is φ = 62465520.

The previous prime is 85890131. The next prime is 85890149. The reversal of 85890145 is 54109858.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 85890145 - 2⁵ = 85890113 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 85890098 and 85890107.

It is not an unprimeable number, because it can be changed into a prime (85890149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 780765 + ... + 780874.

It is an arithmetic number, because the mean of its divisors is an integer number (14054760).

Almost surely, 2^85890145 is an apocalyptic number.

It is an amenable number.

85890145 is a deficient number, since it is larger than the sum of its proper divisors (26547935).

85890145 is a wasteful number, since it uses less digits than its factorization.

85890145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1561655.

The product of its (nonzero) digits is 57600, while the sum is 40.

The square root of 85890145 is about 9267.6936181555. The cubic root of 85890145 is about 441.2124702249.

The spelling of 85890145 in words is "eighty-five million, eight hundred ninety thousand, one hundred forty-five".