11640351 has 16 divisors (see below), whose sum is σ = 16073568. Its totient is φ = 7488000.

The previous prime is 11640347. The next prime is 11640403. The reversal of 11640351 is 15304611.

It is not a de Polignac number, because 11640351 - 2² = 11640347 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11640151) 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, 11955 + ... + 12891.

It is an arithmetic number, because the mean of its divisors is an integer number (1004598).

Almost surely, 2^11640351 is an apocalyptic number.

11640351 is a deficient number, since it is larger than the sum of its proper divisors (4433217).

11640351 is a wasteful number, since it uses less digits than its factorization.

11640351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1082.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 11640351 is about 3411.7958614196. The cubic root of 11640351 is about 226.6324143264.

Adding to 11640351 its reverse (15304611), we get a palindrome (26944962).

The spelling of 11640351 in words is "eleven million, six hundred forty thousand, three hundred fifty-one".