866451412 has 6 divisors (see below), whose sum is σ = 1516289978. Its totient is φ = 433225704.

The previous prime is 866451379. The next prime is 866451413. The reversal of 866451412 is 214154668.

It can be written as a sum of positive squares in only one way, i.e., 801229636 + 65221776 = 28306^2 + 8076^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866451413) by changing a digit.

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 as a sum of consecutive naturals, namely, 108306423 + ... + 108306430.

Almost surely, 2^866451412 is an apocalyptic number.

It is an amenable number.

866451412 is a deficient number, since it is larger than the sum of its proper divisors (649838566).

866451412 is a wasteful number, since it uses less digits than its factorization.

866451412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216612857 (or 216612855 counting only the distinct ones).

The product of its digits is 46080, while the sum is 37.

The square root of 866451412 is about 29435.5467419921. The cubic root of 866451412 is about 953.3405616135.

The spelling of 866451412 in words is "eight hundred sixty-six million, four hundred fifty-one thousand, four hundred twelve".