867856974 has 16 divisors (see below), whose sum is σ = 1772644608. Its totient is φ = 283130552.

The previous prime is 867856973. The next prime is 867856993. The reversal of 867856974 is 479658768.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (867856973) 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 7 ways as a sum of consecutive naturals, for example, 1538472 + ... + 1539035.

It is an arithmetic number, because the mean of its divisors is an integer number (110790288).

Almost surely, 2^867856974 is an apocalyptic number.

867856974 is an abundant number, since it is smaller than the sum of its proper divisors (904787634).

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

867856974 is a wasteful number, since it uses less digits than its factorization.

867856974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3077559.

The product of its digits is 20321280, while the sum is 60.

The square root of 867856974 is about 29459.4123159305. The cubic root of 867856974 is about 953.8557877902.

The spelling of 867856974 in words is "eight hundred sixty-seven million, eight hundred fifty-six thousand, nine hundred seventy-four".