11661270 has 32 divisors (see below), whose sum is σ = 28892160. Its totient is φ = 3009120.

The previous prime is 11661259. The next prime is 11661271. The reversal of 11661270 is 7216611.

It is a self number, because there is not a number n which added to its sum of digits gives 11661270.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11661271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5340 + ... + 7199.

It is an arithmetic number, because the mean of its divisors is an integer number (902880).

Almost surely, 2^11661270 is an apocalyptic number.

11661270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11661270 is an abundant number, since it is smaller than the sum of its proper divisors (17230890).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11661270 is a wasteful number, since it uses less digits than its factorization.

11661270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12580.

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 11661270 is about 3414.8601728328. The cubic root of 11661270 is about 226.7680942648.

Adding to 11661270 its reverse (7216611), we get a palindrome (18877881).

The spelling of 11661270 in words is "eleven million, six hundred sixty-one thousand, two hundred seventy".