260491649 has 8 divisors (see below), whose sum is σ = 285102048. Its totient is φ = 236036160.

The previous prime is 260491643. The next prime is 260491681. The reversal of 260491649 is 946194062.

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 260491649 - 2²⁴ = 243714433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (260491643) 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 7 ways as a sum of consecutive naturals, for example, 35192 + ... + 41945.

It is an arithmetic number, because the mean of its divisors is an integer number (35637756).

Almost surely, 2^260491649 is an apocalyptic number.

It is an amenable number.

260491649 is a deficient number, since it is larger than the sum of its proper divisors (24610399).

260491649 is a wasteful number, since it uses less digits than its factorization.

260491649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77455.

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 260491649 is about 16139.7536846137. The cubic root of 260491649 is about 638.6524780937.

The spelling of 260491649 in words is "two hundred sixty million, four hundred ninety-one thousand, six hundred forty-nine".