813748 has 12 divisors (see below), whose sum is σ = 1533700. Its totient is φ = 375552.

The previous prime is 813721. The next prime is 813749. The reversal of 813748 is 847318.

It is a happy number.

813748 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 128164 + 685584 = 358^2 + 828^2 .

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813749) by changing a digit.

813748 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7773 + ... + 7876.

2⁸¹³⁷⁴⁸ is an apocalyptic number.

It is an amenable number.

813748 is a deficient number, since it is larger than the sum of its proper divisors (719952).

813748 is a wasteful number, since it uses less digits than its factorization.

813748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15666 (or 15664 counting only the distinct ones).

The product of its digits is 5376, while the sum is 31.

The square root of 813748 is about 902.0798190848. The cubic root of 813748 is about 93.3605306227.

The spelling of 813748 in words is "eight hundred thirteen thousand, seven hundred forty-eight".