8661974 has 4 divisors (see below), whose sum is σ = 12992964. Its totient is φ = 4330986.

The previous prime is 8661953. The next prime is 8661977. The reversal of 8661974 is 4791668.

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

It is a super-4 number, since 4×8661974⁴ (a number of 29 digits) contains 4444 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8661977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2165492 + ... + 2165495.

It is an arithmetic number, because the mean of its divisors is an integer number (3248241).

Almost surely, 2^8661974 is an apocalyptic number.

8661974 is a deficient number, since it is larger than the sum of its proper divisors (4330990).

8661974 is a wasteful number, since it uses less digits than its factorization.

8661974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4330989.

The product of its digits is 72576, while the sum is 41.

The square root of 8661974 is about 2943.1231710549. The cubic root of 8661974 is about 205.3709247202.

The spelling of 8661974 in words is "eight million, six hundred sixty-one thousand, nine hundred seventy-four".