565420890 has 32 divisors (see below), whose sum is σ = 1367378496. Its totient is φ = 149626880.

The previous prime is 565420883. The next prime is 565420897. The reversal of 565420890 is 98024565.

565420890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (565420883) and next prime (565420897).

It is not an unprimeable number, because it can be changed into a prime (565420897) 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, 68007 + ... + 75866.

It is an arithmetic number, because the mean of its divisors is an integer number (42730578).

Almost surely, 2^565420890 is an apocalyptic number.

565420890 is an abundant number, since it is smaller than the sum of its proper divisors (801957606).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

565420890 is a wasteful number, since it uses less digits than its factorization.

565420890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144014.

The product of its (nonzero) digits is 86400, while the sum is 39.

The square root of 565420890 is about 23778.5804874892. The cubic root of 565420890 is about 826.9081708187.

The spelling of 565420890 in words is "five hundred sixty-five million, four hundred twenty thousand, eight hundred ninety".