866722783374 has 24 divisors (see below), whose sum is σ = 2146170702000. Its totient is φ = 247635080928.

The previous prime is 866722783373. The next prime is 866722783387. The reversal of 866722783374 is 473387227668.

It is a super-4 number, since 4×866722783374⁴ (a number of 49 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866722783373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3439375999 + ... + 3439376250.

It is an arithmetic number, because the mean of its divisors is an integer number (89423779250).

Almost surely, 2^866722783374 is an apocalyptic number.

866722783374 is an abundant number, since it is smaller than the sum of its proper divisors (1279447918626).

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

866722783374 is a wasteful number, since it uses less digits than its factorization.

866722783374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6878752264 (or 6878752261 counting only the distinct ones).

The product of its digits is 113799168, while the sum is 63.

The spelling of 866722783374 in words is "eight hundred sixty-six billion, seven hundred twenty-two million, seven hundred eighty-three thousand, three hundred seventy-four".