10991461 has 8 divisors (see below), whose sum is σ = 11864160. Its totient is φ = 10122672.

The previous prime is 10991459. The next prime is 10991471. The reversal of 10991461 is 16419901.

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 10991461 - 2¹ = 10991459 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10991471) 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, 7926 + ... + 9208.

It is an arithmetic number, because the mean of its divisors is an integer number (1483020).

Almost surely, 2^10991461 is an apocalyptic number.

It is an amenable number.

10991461 is a deficient number, since it is larger than the sum of its proper divisors (872699).

10991461 is a wasteful number, since it uses less digits than its factorization.

10991461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1955.

The product of its (nonzero) digits is 1944, while the sum is 31.

The square root of 10991461 is about 3315.3372377482. The cubic root of 10991461 is about 222.3404469901.

The spelling of 10991461 in words is "ten million, nine hundred ninety-one thousand, four hundred sixty-one".