826640604 has 36 divisors (see below), whose sum is σ = 2098256160. Its totient is φ = 274400640.

The previous prime is 826640603. The next prime is 826640641. The reversal of 826640604 is 406046628.

It is a happy number.

826640604 is a `hidden beast` number, since 8 + 2 + 6 + 6 + 40 + 604 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (826640603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38964 + ... + 56315.

Almost surely, 2^826640604 is an apocalyptic number.

It is an amenable number.

826640604 is an abundant number, since it is smaller than the sum of its proper divisors (1271615556).

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

826640604 is a wasteful number, since it uses less digits than its factorization.

826640604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95530 (or 95525 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The square root of 826640604 is about 28751.3582983483. The cubic root of 826640604 is about 938.5100146177.

The spelling of 826640604 in words is "eight hundred twenty-six million, six hundred forty thousand, six hundred four".