11661465 has 8 divisors (see below), whose sum is σ = 18658368. Its totient is φ = 6219440.

The previous prime is 11661449. The next prime is 11661467. The reversal of 11661465 is 56416611.

11661465 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 11661465 - 2⁴ = 11661449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11661467) 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, 388701 + ... + 388730.

It is an arithmetic number, because the mean of its divisors is an integer number (2332296).

Almost surely, 2^11661465 is an apocalyptic number.

11661465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11661465 is a deficient number, since it is larger than the sum of its proper divisors (6996903).

11661465 is an equidigital number, since it uses as much as digits as its factorization.

11661465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777439.

The product of its digits is 4320, while the sum is 30.

The square root of 11661465 is about 3414.8887243950. Note that the first 3 decimals coincide. The cubic root of 11661465 is about 226.7693582647.

The spelling of 11661465 in words is "eleven million, six hundred sixty-one thousand, four hundred sixty-five".