10661965 has 8 divisors (see below), whose sum is σ = 12814848. Its totient is φ = 8515920.

The previous prime is 10661939. The next prime is 10661971. The reversal of 10661965 is 56916601.

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

It is not a de Polignac number, because 10661965 - 2¹¹ = 10659917 is a prime.

It is a super-2 number, since 2×10661965² = 227354995322450, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10661965.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2820 + ... + 5410.

It is an arithmetic number, because the mean of its divisors is an integer number (1601856).

Almost surely, 2^10661965 is an apocalyptic number.

It is an amenable number.

10661965 is a deficient number, since it is larger than the sum of its proper divisors (2152883).

10661965 is an equidigital number, since it uses as much as digits as its factorization.

10661965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3419.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 10661965 is about 3265.2664516085. The cubic root of 10661965 is about 220.0961356704.

The spelling of 10661965 in words is "ten million, six hundred sixty-one thousand, nine hundred sixty-five".