1264563 has 24 divisors (see below), whose sum is σ = 1965600. Its totient is φ = 781440.

The previous prime is 1264561. The next prime is 1264573. The reversal of 1264563 is 3654621.

1264563 is a `hidden beast` number, since 12 + 645 + 6 + 3 = 666.

It is not a de Polignac number, because 1264563 - 2¹ = 1264561 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

Its product of digits (4320) is a multiple of the sum of its prime divisors (216).

It is not an unprimeable number, because it can be changed into a prime (1264561) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8413 + ... + 8561.

It is an arithmetic number, because the mean of its divisors is an integer number (81900).

2^1264563 is an apocalyptic number.

1264563 is a deficient number, since it is larger than the sum of its proper divisors (701037).

1264563 is a wasteful number, since it uses less digits than its factorization.

1264563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219 (or 216 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 1264563 is about 1124.5279009433. The cubic root of 1264563 is about 108.1384541156.

The spelling of 1264563 in words is "one million, two hundred sixty-four thousand, five hundred sixty-three".