11961345 has 16 divisors (see below), whose sum is σ = 20878272. Its totient is φ = 5799360.

The previous prime is 11961343. The next prime is 11961349. The reversal of 11961345 is 54316911.

It is not a de Polignac number, because 11961345 - 2¹ = 11961343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11961343) 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, 36082 + ... + 36411.

It is an arithmetic number, because the mean of its divisors is an integer number (1304892).

Almost surely, 2^11961345 is an apocalyptic number.

11961345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11961345 is a deficient number, since it is larger than the sum of its proper divisors (8916927).

11961345 is a wasteful number, since it uses less digits than its factorization.

11961345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72512.

The product of its digits is 3240, while the sum is 30.

The square root of 11961345 is about 3458.5177460872. The cubic root of 11961345 is about 228.6967566965.

The spelling of 11961345 in words is "eleven million, nine hundred sixty-one thousand, three hundred forty-five".