11672649 has 12 divisors (see below), whose sum is σ = 17316676. Its totient is φ = 7571232.

The previous prime is 11672641. The next prime is 11672663. The reversal of 11672649 is 94627611.

11672649 is a `hidden beast` number, since 1 + 1 + 6 + 7 + 2 + 649 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 6350400 + 5322249 = 2520^2 + 2307^2 .

It is not a de Polignac number, because 11672649 - 2³ = 11672641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11672641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17194 + ... + 17859.

Almost surely, 2^11672649 is an apocalyptic number.

It is an amenable number.

11672649 is a deficient number, since it is larger than the sum of its proper divisors (5644027).

11672649 is a wasteful number, since it uses less digits than its factorization.

11672649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35096 (or 35093 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 11672649 is about 3416.5258670175. The cubic root of 11672649 is about 226.8418299525.

It can be divided in two parts, 11672 and 649, that added together give a palindrome (12321).

The spelling of 11672649 in words is "eleven million, six hundred seventy-two thousand, six hundred forty-nine".