260791645 has 8 divisors (see below), whose sum is σ = 331358904. Its totient is φ = 196360704.

The previous prime is 260791639. The next prime is 260791703. The reversal of 260791645 is 546197062.

It can be written as a sum of positive squares in 4 ways, for example, as 93296281 + 167495364 = 9659^2 + 12942^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 260791645 - 2¹¹ = 260789597 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 260791598 and 260791607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1533984 + ... + 1534153.

It is an arithmetic number, because the mean of its divisors is an integer number (41419863).

Almost surely, 2^260791645 is an apocalyptic number.

It is an amenable number.

260791645 is a deficient number, since it is larger than the sum of its proper divisors (70567259).

260791645 is a wasteful number, since it uses less digits than its factorization.

260791645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3068159.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 260791645 is about 16149.0447085888. The cubic root of 260791645 is about 638.8975527272.

The spelling of 260791645 in words is "two hundred sixty million, seven hundred ninety-one thousand, six hundred forty-five".