905212564 has 12 divisors (see below), whose sum is σ = 1652997024. Its totient is φ = 432927704.

The previous prime is 905212559. The next prime is 905212571. The reversal of 905212564 is 465212509.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4919542 + ... + 4919725.

It is an arithmetic number, because the mean of its divisors is an integer number (137749752).

Almost surely, 2^905212564 is an apocalyptic number.

It is an amenable number.

905212564 is a deficient number, since it is larger than the sum of its proper divisors (747784460).

905212564 is a wasteful number, since it uses less digits than its factorization.

905212564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9839294 (or 9839292 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 905212564 is about 30086.7506387779. The cubic root of 905212564 is about 967.3497514102.

The spelling of 905212564 in words is "nine hundred five million, two hundred twelve thousand, five hundred sixty-four".