11720667 has 16 divisors (see below), whose sum is σ = 18911232. Its totient is φ = 6303360.

The previous prime is 11720647. The next prime is 11720671. The reversal of 11720667 is 76602711.

11720667 = T₃₈₃ + T₃₈₄ + ... + T₅₀₁.

It is a happy number.

It is not a de Polignac number, because 11720667 - 2⁶ = 11720603 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11720617) 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, 16059 + ... + 16772.

It is an arithmetic number, because the mean of its divisors is an integer number (1181952).

Almost surely, 2^11720667 is an apocalyptic number.

11720667 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

11720667 is a deficient number, since it is larger than the sum of its proper divisors (7190565).

11720667 is a wasteful number, since it uses less digits than its factorization.

11720667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32858.

The product of its (nonzero) digits is 3528, while the sum is 30.

The square root of 11720667 is about 3423.5459687289. The cubic root of 11720667 is about 227.1524589227.

The spelling of 11720667 in words is "eleven million, seven hundred twenty thousand, six hundred sixty-seven".