813533673 has 8 divisors (see below), whose sum is σ = 1085148288. Its totient is φ = 542137424.

The previous prime is 813533639. The next prime is 813533683. The reversal of 813533673 is 376335318.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 813533673 - 2⁸ = 813533417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (813533683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45690 + ... + 60947.

It is an arithmetic number, because the mean of its divisors is an integer number (135643536).

Almost surely, 2^813533673 is an apocalyptic number.

It is an amenable number.

813533673 is a deficient number, since it is larger than the sum of its proper divisors (271614615).

813533673 is a wasteful number, since it uses less digits than its factorization.

813533673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109183.

The product of its digits is 136080, while the sum is 39.

The square root of 813533673 is about 28522.5116881385. The cubic root of 813533673 is about 933.5233339234.

The spelling of 813533673 in words is "eight hundred thirteen million, five hundred thirty-three thousand, six hundred seventy-three".