809730654 has 16 divisors (see below), whose sum is σ = 1633794192. Its totient is φ = 267521408.

The previous prime is 809730643. The next prime is 809730659. The reversal of 809730654 is 456037908.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (809730659) 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, 596469 + ... + 597824.

It is an arithmetic number, because the mean of its divisors is an integer number (102112137).

Almost surely, 2^809730654 is an apocalyptic number.

809730654 is an abundant number, since it is smaller than the sum of its proper divisors (824063538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

809730654 is a wasteful number, since it uses less digits than its factorization.

809730654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1194411.

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 809730654 is about 28455.7666211965. The cubic root of 809730654 is about 932.0664167948.

The spelling of 809730654 in words is "eight hundred nine million, seven hundred thirty thousand, six hundred fifty-four".