261460739 has 2 divisors, whose sum is σ = 261460740. Its totient is φ = 261460738.

The previous prime is 261460721. The next prime is 261460741. The reversal of 261460739 is 937064162.

261460739 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 261460739 - 2¹⁶ = 261395203 is a prime.

It is a super-2 number, since 2×261460739² = 136723436076852242, which contains 22 as substring.

Together with 261460741, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (261460039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130730369 + 130730370.

It is an arithmetic number, because the mean of its divisors is an integer number (130730370).

Almost surely, 2^261460739 is an apocalyptic number.

261460739 is a deficient number, since it is larger than the sum of its proper divisors (1).

261460739 is an equidigital number, since it uses as much as digits as its factorization.

261460739 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 261460739 is about 16169.7476480000. The cubic root of 261460739 is about 639.4434769808.

The spelling of 261460739 in words is "two hundred sixty-one million, four hundred sixty thousand, seven hundred thirty-nine".