261262607 has 2 divisors, whose sum is σ = 261262608. Its totient is φ = 261262606.

The previous prime is 261262591. The next prime is 261262621. The reversal of 261262607 is 706262162.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 261262607 - 2⁴ = 261262591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (261262627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130631303 + 130631304.

It is an arithmetic number, because the mean of its divisors is an integer number (130631304).

Almost surely, 2^261262607 is an apocalyptic number.

261262607 is a deficient number, since it is larger than the sum of its proper divisors (1).

261262607 is an equidigital number, since it uses as much as digits as its factorization.

261262607 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 261262607 is about 16163.6198606624. The cubic root of 261262607 is about 639.2819151450.

The spelling of 261262607 in words is "two hundred sixty-one million, two hundred sixty-two thousand, six hundred seven".