260451787 has 4 divisors (see below), whose sum is σ = 260613496. Its totient is φ = 260290080.

The previous prime is 260451773. The next prime is 260451799. The reversal of 260451787 is 787154062.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-260451787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (260481787) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78414 + ... + 81667.

It is an arithmetic number, because the mean of its divisors is an integer number (65153374).

Almost surely, 2^260451787 is an apocalyptic number.

260451787 is a deficient number, since it is larger than the sum of its proper divisors (161709).

260451787 is a wasteful number, since it uses less digits than its factorization.

260451787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161708.

The product of its (nonzero) digits is 94080, while the sum is 40.

The square root of 260451787 is about 16138.5187362409. The cubic root of 260451787 is about 638.6198996164.

The spelling of 260451787 in words is "two hundred sixty million, four hundred fifty-one thousand, seven hundred eighty-seven".