10985915 has 4 divisors (see below), whose sum is σ = 13183104. Its totient is φ = 8788728.

The previous prime is 10985911. The next prime is 10985939. The reversal of 10985915 is 51958901.

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

It is a cyclic number.

It is not a de Polignac number, because 10985915 - 2² = 10985911 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10985911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1098587 + ... + 1098596.

It is an arithmetic number, because the mean of its divisors is an integer number (3295776).

Almost surely, 2^10985915 is an apocalyptic number.

10985915 is a deficient number, since it is larger than the sum of its proper divisors (2197189).

10985915 is an equidigital number, since it uses as much as digits as its factorization.

10985915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2197188.

The product of its (nonzero) digits is 16200, while the sum is 38.

The square root of 10985915 is about 3314.5007165484. The cubic root of 10985915 is about 222.3030449991.

It can be divided in two parts, 1098591 and 5, that multiplied together give a triangular number (5492955 = T₃₃₁₄).

The spelling of 10985915 in words is "ten million, nine hundred eighty-five thousand, nine hundred fifteen".