810773402 has 4 divisors (see below), whose sum is σ = 1216160106. Its totient is φ = 405386700.

The previous prime is 810773393. The next prime is 810773413. The reversal of 810773402 is 204377018.

It is a happy number.

810773402 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, and also an emirpimes, since its reverse is a distinct semiprime: 204377018 = 2 ⋅102188509.

It can be written as a sum of positive squares in only one way, i.e., 810597841 + 175561 = 28471^2 + 419^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202693349 + ... + 202693352.

Almost surely, 2^810773402 is an apocalyptic number.

810773402 is a deficient number, since it is larger than the sum of its proper divisors (405386704).

810773402 is a wasteful number, since it uses less digits than its factorization.

810773402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405386703.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 810773402 is about 28474.0829878681. The cubic root of 810773402 is about 932.4663413401.

The spelling of 810773402 in words is "eight hundred ten million, seven hundred seventy-three thousand, four hundred two".