813746 has 4 divisors (see below), whose sum is σ = 1220622. Its totient is φ = 406872.

The previous prime is 813721. The next prime is 813749. The reversal of 813746 is 647318.

813746 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 657721 + 156025 = 811^2 + 395^2 .

It is a plaindrome in base 15.

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

813746 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 as a sum of consecutive naturals, namely, 203435 + ... + 203438.

2⁸¹³⁷⁴⁶ is an apocalyptic number.

813746 is a deficient number, since it is larger than the sum of its proper divisors (406876).

813746 is a wasteful number, since it uses less digits than its factorization.

813746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406875.

The product of its digits is 4032, while the sum is 29.

The square root of 813746 is about 902.0787105347. The cubic root of 813746 is about 93.3604541366.

The spelling of 813746 in words is "eight hundred thirteen thousand, seven hundred forty-six".