268239977 has 12 divisors (see below), whose sum is σ = 276226560. Its totient is φ = 260475768.

The previous prime is 268239949. The next prime is 268240001. The reversal of 268239977 is 779932862.

It is not a de Polignac number, because 268239977 - 2¹⁰ = 268238953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (268239947) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 441608 + ... + 442214.

It is an arithmetic number, because the mean of its divisors is an integer number (23018880).

Almost surely, 2^268239977 is an apocalyptic number.

It is an amenable number.

268239977 is a deficient number, since it is larger than the sum of its proper divisors (7986583).

268239977 is an equidigital number, since it uses as much as digits as its factorization.

268239977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 932 (or 889 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 53.

The square root of 268239977 is about 16378.0333678986. The cubic root of 268239977 is about 644.9229537600.

The spelling of 268239977 in words is "two hundred sixty-eight million, two hundred thirty-nine thousand, nine hundred seventy-seven".