813146 has 4 divisors (see below), whose sum is σ = 1219722. Its totient is φ = 406572.

The previous prime is 813133. The next prime is 813157. The reversal of 813146 is 641318.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 641318 = 2 ⋅320659.

It can be written as a sum of positive squares in only one way, i.e., 600625 + 212521 = 775^2 + 461^2 .

It is a super-2 number, since 2×813146² = 1322412834632, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203285 + ... + 203288.

2⁸¹³¹⁴⁶ is an apocalyptic number.

813146 is a deficient number, since it is larger than the sum of its proper divisors (406576).

813146 is a wasteful number, since it uses less digits than its factorization.

813146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406575.

The product of its digits is 576, while the sum is 23.

The square root of 813146 is about 901.7460839948. The cubic root of 813146 is about 93.3375026482.

It can be divided in two parts, 813 and 146, that added together give a palindrome (959).

The spelling of 813146 in words is "eight hundred thirteen thousand, one hundred forty-six".