866081342 has 16 divisors (see below), whose sum is σ = 1485605472. Its totient is φ = 370954080.

The previous prime is 866081309. The next prime is 866081357. The reversal of 866081342 is 243180668.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 866081296 and 866081305.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6608 + ... + 42140.

It is an arithmetic number, because the mean of its divisors is an integer number (92850342).

Almost surely, 2^866081342 is an apocalyptic number.

866081342 is a deficient number, since it is larger than the sum of its proper divisors (619524130).

866081342 is a wasteful number, since it uses less digits than its factorization.

866081342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37283.

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 866081342 is about 29429.2599635125. The cubic root of 866081342 is about 953.2048152127.

The spelling of 866081342 in words is "eight hundred sixty-six million, eighty-one thousand, three hundred forty-two".