11699145 has 48 divisors (see below), whose sum is σ = 22054032. Its totient is φ = 5713920.

The previous prime is 11699143. The next prime is 11699147. The reversal of 11699145 is 54199611.

It is an interprime number because it is at equal distance from previous prime (11699143) and next prime (11699147).

It can be written as a sum of positive squares in 8 ways, for example, as 389376 + 11309769 = 624^2 + 3363^2 .

It is not a de Polignac number, because 11699145 - 2¹ = 11699143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11699143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 31179 + ... + 31551.

It is an arithmetic number, because the mean of its divisors is an integer number (459459).

Almost surely, 2^11699145 is an apocalyptic number.

11699145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11699145 is a deficient number, since it is larger than the sum of its proper divisors (10354887).

11699145 is a wasteful number, since it uses less digits than its factorization.

11699145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442 (or 439 counting only the distinct ones).

The product of its digits is 9720, while the sum is 36.

The square root of 11699145 is about 3420.4012922463. The cubic root of 11699145 is about 227.0133379834.

The spelling of 11699145 in words is "eleven million, six hundred ninety-nine thousand, one hundred forty-five".