866083740 has 48 divisors (see below), whose sum is σ = 2448595968. Its totient is φ = 228711744.

The previous prime is 866083703. The next prime is 866083747. The reversal of 866083740 is 47380668.

It is a junction number, because it is equal to n+sod(n) for n = 866083692 and 866083701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866083747) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63892 + ... + 76251.

It is an arithmetic number, because the mean of its divisors is an integer number (51012416).

Almost surely, 2^866083740 is an apocalyptic number.

It is an amenable number.

866083740 is an abundant number, since it is smaller than the sum of its proper divisors (1582512228).

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

866083740 is a wasteful number, since it uses less digits than its factorization.

866083740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140258 (or 140256 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 42.

The square root of 866083740 is about 29429.3007052495. The cubic root of 866083740 is about 953.2056949541.

The spelling of 866083740 in words is "eight hundred sixty-six million, eighty-three thousand, seven hundred forty".