268681577 has 4 divisors (see below), whose sum is σ = 271290240. Its totient is φ = 266072916.

The previous prime is 268681573. The next prime is 268681627. The reversal of 268681577 is 775186862.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 775186862 = 2 ⋅387593431.

It is a cyclic number.

It is not a de Polignac number, because 268681577 - 2² = 268681573 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (268681571) 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, 1304177 + ... + 1304382.

It is an arithmetic number, because the mean of its divisors is an integer number (67822560).

Almost surely, 2^268681577 is an apocalyptic number.

It is an amenable number.

268681577 is a deficient number, since it is larger than the sum of its proper divisors (2608663).

268681577 is a wasteful number, since it uses less digits than its factorization.

268681577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2608662.

The product of its digits is 1128960, while the sum is 50.

The square root of 268681577 is about 16391.5092959739. The cubic root of 268681577 is about 645.2766691606.

The spelling of 268681577 in words is "two hundred sixty-eight million, six hundred eighty-one thousand, five hundred seventy-seven".