1563479 has 4 divisors (see below), whose sum is σ = 1569960. Its totient is φ = 1557000.

The previous prime is 1563469. The next prime is 1563481. The reversal of 1563479 is 9743651.

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 1563479 - 2²⁰ = 514903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1563409) 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, 2864 + ... + 3365.

It is an arithmetic number, because the mean of its divisors is an integer number (392490).

2^1563479 is an apocalyptic number.

1563479 is a deficient number, since it is larger than the sum of its proper divisors (6481).

1563479 is an equidigital number, since it uses as much as digits as its factorization.

1563479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6480.

The product of its digits is 22680, while the sum is 35.

The square root of 1563479 is about 1250.3915386790. The cubic root of 1563479 is about 116.0639510630.

The spelling of 1563479 in words is "one million, five hundred sixty-three thousand, four hundred seventy-nine".