260261391 has 8 divisors (see below), whose sum is σ = 373708720. Its totient is φ = 160160832.

The previous prime is 260261387. The next prime is 260261401. The reversal of 260261391 is 193162062.

260261391 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 260261391 - 2² = 260261387 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260261311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3336646 + ... + 3336723.

It is an arithmetic number, because the mean of its divisors is an integer number (46713590).

Almost surely, 2^260261391 is an apocalyptic number.

260261391 is a deficient number, since it is larger than the sum of its proper divisors (113447329).

260261391 is a wasteful number, since it uses less digits than its factorization.

260261391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6673385.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 260261391 is about 16132.6188512591. The cubic root of 260261391 is about 638.4642466050.

The spelling of 260261391 in words is "two hundred sixty million, two hundred sixty-one thousand, three hundred ninety-one".