840627081 has 48 divisors (see below), whose sum is σ = 1427272704. Its totient is φ = 466778592.

The previous prime is 840627049. The next prime is 840627083. The reversal of 840627081 is 180726048.

840627081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 840627081 - 2⁵ = 840627049 is a prime.

It is a super-2 number, since 2×840627081² = 1413307778621161122, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (840627083) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 614260 + ... + 615626.

It is an arithmetic number, because the mean of its divisors is an integer number (29734848).

Almost surely, 2^840627081 is an apocalyptic number.

It is an amenable number.

840627081 is a deficient number, since it is larger than the sum of its proper divisors (586645623).

840627081 is a wasteful number, since it uses less digits than its factorization.

840627081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1650 (or 1647 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 840627081 is about 28993.5696491481. The cubic root of 840627081 is about 943.7735294281.

The spelling of 840627081 in words is "eight hundred forty million, six hundred twenty-seven thousand, eighty-one".