285420659 has 4 divisors (see below), whose sum is σ = 286915200. Its totient is φ = 283926120.

The previous prime is 285420643. The next prime is 285420677. The reversal of 285420659 is 956024582.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 956024582 = 2 ⋅478012291.

It is a cyclic number.

It is not a de Polignac number, because 285420659 - 2⁴ = 285420643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (285420959) 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, 746984 + ... + 747365.

It is an arithmetic number, because the mean of its divisors is an integer number (71728800).

Almost surely, 2^285420659 is an apocalyptic number.

285420659 is a deficient number, since it is larger than the sum of its proper divisors (1494541).

285420659 is a wasteful number, since it uses less digits than its factorization.

285420659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1494540.

The product of its (nonzero) digits is 172800, while the sum is 41.

The square root of 285420659 is about 16894.3972665496. The cubic root of 285420659 is about 658.4080541299.

The spelling of 285420659 in words is "two hundred eighty-five million, four hundred twenty thousand, six hundred fifty-nine".