874091661 has 8 divisors (see below), whose sum is σ = 1165631520. Its totient is φ = 582639792.

The previous prime is 874091653. The next prime is 874091671. The reversal of 874091661 is 166190478.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 874091661 - 2³ = 874091653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (874091611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6435 + ... + 42303.

It is an arithmetic number, because the mean of its divisors is an integer number (145703940).

Almost surely, 2^874091661 is an apocalyptic number.

It is an amenable number.

874091661 is a deficient number, since it is larger than the sum of its proper divisors (291539859).

874091661 is a wasteful number, since it uses less digits than its factorization.

874091661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43995.

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 874091661 is about 29565.0411973330. The cubic root of 874091661 is about 956.1345072701.

The spelling of 874091661 in words is "eight hundred seventy-four million, ninety-one thousand, six hundred sixty-one".