1320575 has 12 divisors (see below), whose sum is σ = 1656888. Its totient is φ = 1044000.

The previous prime is 1320541. The next prime is 1320607. The reversal of 1320575 is 5750231.

It is not a de Polignac number, because 1320575 - 2¹² = 1316479 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1320575.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2264 + ... + 2786.

It is an arithmetic number, because the mean of its divisors is an integer number (138074).

2^1320575 is an apocalyptic number.

1320575 is a deficient number, since it is larger than the sum of its proper divisors (336313).

1320575 is a wasteful number, since it uses less digits than its factorization.

1320575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634 (or 629 counting only the distinct ones).

The product of its (nonzero) digits is 1050, while the sum is 23.

The square root of 1320575 is about 1149.1627386928. The cubic root of 1320575 is about 109.7120568363.

The spelling of 1320575 in words is "one million, three hundred twenty thousand, five hundred seventy-five".