842770647 has 6 divisors (see below), whose sum is σ = 1217335392. Its totient is φ = 561847092.

The previous prime is 842770601. The next prime is 842770661. The reversal of 842770647 is 746077248.

It is not a de Polignac number, because 842770647 - 2¹⁵ = 842737879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (842770667) 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 5 ways as a sum of consecutive naturals, for example, 46820583 + ... + 46820600.

It is an arithmetic number, because the mean of its divisors is an integer number (202889232).

Almost surely, 2^842770647 is an apocalyptic number.

842770647 is a deficient number, since it is larger than the sum of its proper divisors (374564745).

842770647 is a wasteful number, since it uses less digits than its factorization.

842770647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93641189 (or 93641186 counting only the distinct ones).

The product of its (nonzero) digits is 526848, while the sum is 45.

The square root of 842770647 is about 29030.5123447727. The cubic root of 842770647 is about 944.5750436662.

The spelling of 842770647 in words is "eight hundred forty-two million, seven hundred seventy thousand, six hundred forty-seven".