260961663 has 8 divisors (see below), whose sum is σ = 348151168. Its totient is φ = 173873304.

The previous prime is 260961653. The next prime is 260961671. The reversal of 260961663 is 366169062.

It is a happy number.

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

It is not a de Polignac number, because 260961663 - 2⁴ = 260961647 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 (260961643) 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, 19045 + ... + 29742.

It is an arithmetic number, because the mean of its divisors is an integer number (43518896).

Almost surely, 2^260961663 is an apocalyptic number.

260961663 is a deficient number, since it is larger than the sum of its proper divisors (87189505).

260961663 is a wasteful number, since it uses less digits than its factorization.

260961663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50573.

The product of its (nonzero) digits is 69984, while the sum is 39.

The square root of 260961663 is about 16154.3078774672. The cubic root of 260961663 is about 639.0363614782.

The spelling of 260961663 in words is "two hundred sixty million, nine hundred sixty-one thousand, six hundred sixty-three".