1299563 has 4 divisors (see below), whose sum is σ = 1302168. Its totient is φ = 1296960.

The previous prime is 1299553. The next prime is 1299583. The reversal of 1299563 is 3659921.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1299563 - 2⁶ = 1299499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1299533) 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, 293 + ... + 1638.

It is an arithmetic number, because the mean of its divisors is an integer number (325542).

2^1299563 is an apocalyptic number.

1299563 is a deficient number, since it is larger than the sum of its proper divisors (2605).

1299563 is an equidigital number, since it uses as much as digits as its factorization.

1299563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2604.

The product of its digits is 14580, while the sum is 35.

The square root of 1299563 is about 1139.9837718143. The cubic root of 1299563 is about 109.1270577384.

The spelling of 1299563 in words is "one million, two hundred ninety-nine thousand, five hundred sixty-three".