866704540 has 48 divisors (see below), whose sum is σ = 2075395392. Its totient is φ = 301188096.

The previous prime is 866704519. The next prime is 866704549. The reversal of 866704540 is 45407668.

It is a super-2 number, since 2×866704540² = 1502353519313223200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 866704493 and 866704502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866704549) 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, 93624 + ... + 102463.

It is an arithmetic number, because the mean of its divisors is an integer number (43237404).

Almost surely, 2^866704540 is an apocalyptic number.

It is an amenable number.

866704540 is an abundant number, since it is smaller than the sum of its proper divisors (1208690852).

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

866704540 is a wasteful number, since it uses less digits than its factorization.

866704540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196126 (or 196124 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 40.

The square root of 866704540 is about 29439.8461273153. The cubic root of 866704540 is about 953.4333899362.

The spelling of 866704540 in words is "eight hundred sixty-six million, seven hundred four thousand, five hundred forty".