890223685 has 32 divisors (see below), whose sum is σ = 1174376448. Its totient is φ = 643852800.

The previous prime is 890223667. The next prime is 890223709. The reversal of 890223685 is 586322098.

It is not a de Polignac number, because 890223685 - 2¹⁹ = 889699397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 772860 + ... + 774010.

It is an arithmetic number, because the mean of its divisors is an integer number (36699264).

Almost surely, 2^890223685 is an apocalyptic number.

It is an amenable number.

890223685 is a deficient number, since it is larger than the sum of its proper divisors (284152763).

890223685 is a wasteful number, since it uses less digits than its factorization.

890223685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1405.

The product of its (nonzero) digits is 207360, while the sum is 43.

The square root of 890223685 is about 29836.6165139414. The cubic root of 890223685 is about 961.9807501158.

The spelling of 890223685 in words is "eight hundred ninety million, two hundred twenty-three thousand, six hundred eighty-five".