861707974 has 4 divisors (see below), whose sum is σ = 1292561964. Its totient is φ = 430853986.

The previous prime is 861707927. The next prime is 861707981. The reversal of 861707974 is 479707168.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 215426992 + ... + 215426995.

It is an arithmetic number, because the mean of its divisors is an integer number (323140491).

Almost surely, 2^861707974 is an apocalyptic number.

861707974 is a deficient number, since it is larger than the sum of its proper divisors (430853990).

861707974 is a wasteful number, since it uses less digits than its factorization.

861707974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430853989.

The product of its (nonzero) digits is 592704, while the sum is 49.

The square root of 861707974 is about 29354.8628680156. The cubic root of 861707974 is about 951.5976713366.

The spelling of 861707974 in words is "eight hundred sixty-one million, seven hundred seven thousand, nine hundred seventy-four".