12765601 has 2 divisors, whose sum is σ = 12765602. Its totient is φ = 12765600.

The previous prime is 12765581. The next prime is 12765607. The reversal of 12765601 is 10656721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8761600 + 4004001 = 2960^2 + 2001^2 .

It is a cyclic number.

It is not a de Polignac number, because 12765601 - 2⁵ = 12765569 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12765601.

It is not a weakly prime, because it can be changed into another prime (12765607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6382800 + 6382801.

It is an arithmetic number, because the mean of its divisors is an integer number (6382801).

Almost surely, 2^12765601 is an apocalyptic number.

It is an amenable number.

12765601 is a deficient number, since it is larger than the sum of its proper divisors (1).

12765601 is an equidigital number, since it uses as much as digits as its factorization.

12765601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 12765601 is about 3572.8981233727. The cubic root of 12765601 is about 233.7116825483.

It can be divided in two parts, 12765 and 601, that added together give a triangular number (13366 = T₁₆₃).

The spelling of 12765601 in words is "twelve million, seven hundred sixty-five thousand, six hundred one".