810649694 has 8 divisors (see below), whose sum is σ = 1216114248. Its totient is φ = 405278280.

The previous prime is 810649657. The next prime is 810649727. The reversal of 810649694 is 496946018.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5684 + ... + 40664.

It is an arithmetic number, because the mean of its divisors is an integer number (152014281).

Almost surely, 2^810649694 is an apocalyptic number.

810649694 is a deficient number, since it is larger than the sum of its proper divisors (405464554).

810649694 is a wasteful number, since it uses less digits than its factorization.

810649694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46570.

The product of its (nonzero) digits is 373248, while the sum is 47.

The square root of 810649694 is about 28471.9106137962. The cubic root of 810649694 is about 932.4189136152.

The spelling of 810649694 in words is "eight hundred ten million, six hundred forty-nine thousand, six hundred ninety-four".