13422785 has 12 divisors (see below), whose sum is σ = 16520124. Its totient is φ = 10469760.

The previous prime is 13422781. The next prime is 13422791. The reversal of 13422785 is 58722431.

It can be written as a sum of positive squares in 6 ways, for example, as 6848689 + 6574096 = 2617^2 + 2564^2 .

It is not a de Polignac number, because 13422785 - 2² = 13422781 is a prime.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13422781) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7607 + ... + 9203.

It is an arithmetic number, because the mean of its divisors is an integer number (1376677).

Almost surely, 2^13422785 is an apocalyptic number.

It is an amenable number.

13422785 is a deficient number, since it is larger than the sum of its proper divisors (3097339).

13422785 is an equidigital number, since it uses as much as digits as its factorization.

13422785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1684 (or 1643 counting only the distinct ones).

The product of its digits is 13440, while the sum is 32.

The square root of 13422785 is about 3663.7119155305. The cubic root of 13422785 is about 237.6553222217.

The spelling of 13422785 in words is "thirteen million, four hundred twenty-two thousand, seven hundred eighty-five".