10785921 has 8 divisors (see below), whose sum is σ = 14516064. Its totient is φ = 7123200.

The previous prime is 10785899. The next prime is 10785953. The reversal of 10785921 is 12958701.

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

It is not a de Polignac number, because 10785921 - 2⁶ = 10785857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10785421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16480 + ... + 17121.

It is an arithmetic number, because the mean of its divisors is an integer number (1814508).

Almost surely, 2^10785921 is an apocalyptic number.

It is an amenable number.

10785921 is a deficient number, since it is larger than the sum of its proper divisors (3730143).

10785921 is a wasteful number, since it uses less digits than its factorization.

10785921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33711.

The product of its (nonzero) digits is 5040, while the sum is 33.

The square root of 10785921 is about 3284.1925948397. The cubic root of 10785921 is about 220.9457972626.

It can be divided in two parts, 107859 and 21, that added together give a triangular number (107880 = T₄₆₄).

The spelling of 10785921 in words is "ten million, seven hundred eighty-five thousand, nine hundred twenty-one".