842658690 has 16 divisors (see below), whose sum is σ = 2022380928. Its totient is φ = 224708976.

The previous prime is 842658689. The next prime is 842658701. The reversal of 842658690 is 96856248.

It is a happy number.

842658690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×842658690² = 1420147335665032200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14044282 + ... + 14044341.

It is an arithmetic number, because the mean of its divisors is an integer number (126398808).

Almost surely, 2^842658690 is an apocalyptic number.

842658690 is an abundant number, since it is smaller than the sum of its proper divisors (1179722238).

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

842658690 is a wasteful number, since it uses less digits than its factorization.

842658690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28088633.

The product of its (nonzero) digits is 829440, while the sum is 48.

The square root of 842658690 is about 29028.5840164483. The cubic root of 842658690 is about 944.5332147805.

It can be divided in two parts, 842658 and 690, that added together give a palindrome (843348).

The spelling of 842658690 in words is "eight hundred forty-two million, six hundred fifty-eight thousand, six hundred ninety".