26605961 has 2 divisors, whose sum is σ = 26605962. Its totient is φ = 26605960.

The previous prime is 26605933. The next prime is 26605981. The reversal of 26605961 is 16950662.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24810361 + 1795600 = 4981^2 + 1340^2 .

It is a cyclic number.

It is not a de Polignac number, because 26605961 - 2⁶ = 26605897 is a prime.

It is not a weakly prime, because it can be changed into another prime (26605981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13302980 + 13302981.

It is an arithmetic number, because the mean of its divisors is an integer number (13302981).

Almost surely, 2^26605961 is an apocalyptic number.

It is an amenable number.

26605961 is a deficient number, since it is larger than the sum of its proper divisors (1).

26605961 is an equidigital number, since it uses as much as digits as its factorization.

26605961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 26605961 is about 5158.0966450814. The cubic root of 26605961 is about 298.5334386381.

The spelling of 26605961 in words is "twenty-six million, six hundred five thousand, nine hundred sixty-one".