866862331464 has 32 divisors (see below), whose sum is σ = 2167273501920. Its totient is φ = 288938420736.

The previous prime is 866862331463. The next prime is 866862331477. The reversal of 866862331464 is 464133268668.

It is a super-2 number, since 2×866862331464² (a number of 25 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (866862331463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 525082 + ... + 1417545.

It is an arithmetic number, because the mean of its divisors is an integer number (67727296935).

Almost surely, 2^866862331464 is an apocalyptic number.

It is an amenable number.

866862331464 is an abundant number, since it is smaller than the sum of its proper divisors (1300411170456).

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

866862331464 is a wasteful number, since it uses less digits than its factorization.

866862331464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1961229 (or 1961225 counting only the distinct ones).

The product of its digits is 23887872, while the sum is 57.

The spelling of 866862331464 in words is "eight hundred sixty-six billion, eight hundred sixty-two million, three hundred thirty-one thousand, four hundred sixty-four".