265977 has 8 divisors (see below), whose sum is σ = 394080. Its totient is φ = 177300.

The previous prime is 265961. The next prime is 265987. The reversal of 265977 is 779562.

It is not a de Polignac number, because 265977 - 2⁴ = 265961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (265957) 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, 4899 + ... + 4952.

It is an arithmetic number, because the mean of its divisors is an integer number (49260).

2²⁶⁵⁹⁷⁷ is an apocalyptic number.

265977 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

265977 is a deficient number, since it is larger than the sum of its proper divisors (128103).

265977 is an equidigital number, since it uses as much as digits as its factorization.

265977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9860 (or 9854 counting only the distinct ones).

The product of its digits is 26460, while the sum is 36.

The square root of 265977 is about 515.7295803035. The cubic root of 265977 is about 64.3104222484.

The spelling of 265977 in words is "two hundred sixty-five thousand, nine hundred seventy-seven".