874630921 has 8 divisors (see below), whose sum is σ = 880155720. Its totient is φ = 869121408.

The previous prime is 874630907. The next prime is 874630969. The reversal of 874630921 is 129036478.

It can be written as a sum of positive squares in 4 ways, for example, as 3200521 + 871430400 = 1789^2 + 29520^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 874630921 - 2¹¹ = 874628873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (874630121) 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, 124125 + ... + 130981.

It is an arithmetic number, because the mean of its divisors is an integer number (110019465).

Almost surely, 2^874630921 is an apocalyptic number.

It is an amenable number.

874630921 is a deficient number, since it is larger than the sum of its proper divisors (5524799).

874630921 is a wasteful number, since it uses less digits than its factorization.

874630921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7643.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 874630921 is about 29574.1596837509. The cubic root of 874630921 is about 956.3310919540.

The spelling of 874630921 in words is "eight hundred seventy-four million, six hundred thirty thousand, nine hundred twenty-one".