11667601 has 16 divisors (see below), whose sum is σ = 13436928. Its totient is φ = 10027600.

The previous prime is 11667587. The next prime is 11667611. The reversal of 11667601 is 10676611.

It is not a de Polignac number, because 11667601 - 2¹³ = 11659409 is a prime.

It is a super-2 number, since 2×11667601² = 272265826190402, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11667601.

It is not an unprimeable number, because it can be changed into a prime (11667611) 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, 26856 + ... + 27286.

It is an arithmetic number, because the mean of its divisors is an integer number (839808).

Almost surely, 2^11667601 is an apocalyptic number.

11667601 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11667601 is a deficient number, since it is larger than the sum of its proper divisors (1769327).

11667601 is a wasteful number, since it uses less digits than its factorization.

11667601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 11667601 is about 3415.7870249768. The cubic root of 11667601 is about 226.8091249321.

The spelling of 11667601 in words is "eleven million, six hundred sixty-seven thousand, six hundred one".