804426646 has 4 divisors (see below), whose sum is σ = 1206639972. Its totient is φ = 402213322.

The previous prime is 804426643. The next prime is 804426653. The reversal of 804426646 is 646624408.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 804426599 and 804426608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (804426643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201106660 + ... + 201106663.

It is an arithmetic number, because the mean of its divisors is an integer number (301659993).

Almost surely, 2^804426646 is an apocalyptic number.

804426646 is a deficient number, since it is larger than the sum of its proper divisors (402213326).

804426646 is a wasteful number, since it uses less digits than its factorization.

804426646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402213325.

The product of its (nonzero) digits is 221184, while the sum is 40.

The square root of 804426646 is about 28362.4160818503. The cubic root of 804426646 is about 930.0268408641.

The spelling of 804426646 in words is "eight hundred four million, four hundred twenty-six thousand, six hundred forty-six".