11780667 has 32 divisors (see below), whose sum is σ = 18233600. Its totient is φ = 7511616.

The previous prime is 11780617. The next prime is 11780687. The reversal of 11780667 is 76608711.

It is a happy number.

It is not a de Polignac number, because 11780667 - 2⁸ = 11780411 is a prime.

It is a super-2 number, since 2×11780667² = 277568229929778, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11780617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 84684 + ... + 84822.

It is an arithmetic number, because the mean of its divisors is an integer number (569800).

Almost surely, 2^11780667 is an apocalyptic number.

11780667 is a deficient number, since it is larger than the sum of its proper divisors (6452933).

11780667 is a wasteful number, since it uses less digits than its factorization.

11780667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264 (or 258 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 11780667 is about 3432.2976269549. The cubic root of 11780667 is about 227.5394095073.

The spelling of 11780667 in words is "eleven million, seven hundred eighty thousand, six hundred sixty-seven".