842704636 has 12 divisors (see below), whose sum is σ = 1538852112. Its totient is φ = 403032608.

The previous prime is 842704633. The next prime is 842704699. The reversal of 842704636 is 636407248.

It is a happy number.

It is a super-2 number, since 2×842704636² = 1420302207071784992, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (842704631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4579825 + ... + 4580008.

It is an arithmetic number, because the mean of its divisors is an integer number (128237676).

Almost surely, 2^842704636 is an apocalyptic number.

It is an amenable number.

842704636 is a deficient number, since it is larger than the sum of its proper divisors (696147476).

842704636 is a wasteful number, since it uses less digits than its factorization.

842704636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9159860 (or 9159858 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 40.

The square root of 842704636 is about 29029.3753980343. The cubic root of 842704636 is about 944.5503813727.

The spelling of 842704636 in words is "eight hundred forty-two million, seven hundred four thousand, six hundred thirty-six".