260207649 has 24 divisors (see below), whose sum is σ = 405699840. Its totient is φ = 159759072.

The previous prime is 260207587. The next prime is 260207653. The reversal of 260207649 is 946702062.

It is a happy number.

260207649 is a `hidden beast` number, since 2 + 6 + 0 + 2 + 0 + 7 + 649 = 666.

It is not a de Polignac number, because 260207649 - 2⁸ = 260207393 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (260207669) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53722 + ... + 58364.

It is an arithmetic number, because the mean of its divisors is an integer number (16904160).

Almost surely, 2^260207649 is an apocalyptic number.

It is an amenable number.

260207649 is a deficient number, since it is larger than the sum of its proper divisors (145492191).

260207649 is a wasteful number, since it uses less digits than its factorization.

260207649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5141 (or 5138 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 260207649 is about 16130.9531336496. The cubic root of 260207649 is about 638.4202975743.

The spelling of 260207649 in words is "two hundred sixty million, two hundred seven thousand, six hundred forty-nine".