260400641 has 8 divisors (see below), whose sum is σ = 271962240. Its totient is φ = 248859072.

The previous prime is 260400629. The next prime is 260400683. The reversal of 260400641 is 146004062.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-260400641 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (260400941) 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, 25625 + ... + 34313.

It is an arithmetic number, because the mean of its divisors is an integer number (33995280).

Almost surely, 2^260400641 is an apocalyptic number.

It is an amenable number.

260400641 is a deficient number, since it is larger than the sum of its proper divisors (11561599).

260400641 is a wasteful number, since it uses less digits than its factorization.

260400641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10015.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 260400641 is about 16136.9340644374. The cubic root of 260400641 is about 638.5780940651.

The spelling of 260400641 in words is "two hundred sixty million, four hundred thousand, six hundred forty-one".