1623713 has 12 divisors (see below), whose sum is σ = 2034900. Its totient is φ = 1284192.

The previous prime is 1623707. The next prime is 1623733. The reversal of 1623713 is 3173261.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 906304 + 717409 = 952^2 + 847^2 .

It is not a de Polignac number, because 1623713 - 2¹⁶ = 1558177 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1623733) 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, 638 + ... + 1911.

It is an arithmetic number, because the mean of its divisors is an integer number (169575).

2^1623713 is an apocalyptic number.

1623713 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1623713 is a deficient number, since it is larger than the sum of its proper divisors (411187).

1623713 is a wasteful number, since it uses less digits than its factorization.

1623713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2576 (or 2569 counting only the distinct ones).

The product of its digits is 756, while the sum is 23.

The square root of 1623713 is about 1274.2499754758. The cubic root of 1623713 is about 117.5356885706.

Adding to 1623713 its reverse (3173261), we get a palindrome (4796974).

The spelling of 1623713 in words is "one million, six hundred twenty-three thousand, seven hundred thirteen".