260078729 has 4 divisors (see below), whose sum is σ = 260113920. Its totient is φ = 260043540.

The previous prime is 260078723. The next prime is 260078759. The reversal of 260078729 is 927870062.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 260078729 - 2⁴ = 260078713 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (260078723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1757 + ... + 22874.

It is an arithmetic number, because the mean of its divisors is an integer number (65028480).

Almost surely, 2^260078729 is an apocalyptic number.

It is an amenable number.

260078729 is a deficient number, since it is larger than the sum of its proper divisors (35191).

260078729 is a wasteful number, since it uses less digits than its factorization.

260078729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35190.

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 260078729 is about 16126.9565944725. The cubic root of 260078729 is about 638.3148449464.

The spelling of 260078729 in words is "two hundred sixty million, seventy-eight thousand, seven hundred twenty-nine".