815146 has 4 divisors (see below), whose sum is σ = 1222722. Its totient is φ = 407572.

The previous prime is 815141. The next prime is 815149. The reversal of 815146 is 641518.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 641518 = 2 ⋅320759.

It can be written as a sum of positive squares in only one way, i.e., 436921 + 378225 = 661^2 + 615^2 .

It is a plaindrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 815146.

It is not an unprimeable number, because it can be changed into a prime (815141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203785 + ... + 203788.

2⁸¹⁵¹⁴⁶ is an apocalyptic number.

815146 is a deficient number, since it is larger than the sum of its proper divisors (407576).

815146 is a wasteful number, since it uses less digits than its factorization.

815146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407575.

The product of its digits is 960, while the sum is 25.

The square root of 815146 is about 902.8543625635. The cubic root of 815146 is about 93.4139637702.

It can be divided in two parts, 815 and 146, that added together give a square (961 = 31²).

The spelling of 815146 in words is "eight hundred fifteen thousand, one hundred forty-six".