26659961 has 12 divisors (see below), whose sum is σ = 29306220. Its totient is φ = 24218880.

The previous prime is 26659949. The next prime is 26659973. The reversal of 26659961 is 16995662.

It is an interprime number because it is at equal distance from previous prime (26659949) and next prime (26659973).

It can be written as a sum of positive squares in 6 ways, for example, as 75625 + 26584336 = 275^2 + 5156^2 .

It is a de Polignac number, because none of the positive numbers 2^k-26659961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26659931) 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, 6791 + ... + 9971.

It is an arithmetic number, because the mean of its divisors is an integer number (2442185).

Almost surely, 2^26659961 is an apocalyptic number.

It is an amenable number.

26659961 is a deficient number, since it is larger than the sum of its proper divisors (2646259).

26659961 is a wasteful number, since it uses less digits than its factorization.

26659961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3244 (or 3227 counting only the distinct ones).

The product of its digits is 174960, while the sum is 44.

The square root of 26659961 is about 5163.3284807380. The cubic root of 26659961 is about 298.7352719991.

The spelling of 26659961 in words is "twenty-six million, six hundred fifty-nine thousand, nine hundred sixty-one".