1265327667 has 12 divisors (see below), whose sum is σ = 1923890280. Its totient is φ = 799154208.

The previous prime is 1265327641. The next prime is 1265327669. The reversal of 1265327667 is 7667235621.

1265327667 is a `hidden beast` number, since 1 + 265 + 327 + 6 + 67 = 666.

It is not a de Polignac number, because 1265327667 - 2⁸ = 1265327411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1265327669) 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, 3699618 + ... + 3699959.

It is an arithmetic number, because the mean of its divisors is an integer number (160324190).

Almost surely, 2^1265327667 is an apocalyptic number.

1265327667 is a deficient number, since it is larger than the sum of its proper divisors (658562613).

1265327667 is a wasteful number, since it uses less digits than its factorization.

1265327667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7399602 (or 7399599 counting only the distinct ones).

The product of its digits is 635040, while the sum is 45.

The square root of 1265327667 is about 35571.4445447468. Note that the first 3 decimals coincide. The cubic root of 1265327667 is about 1081.6024642535.

The spelling of 1265327667 in words is "one billion, two hundred sixty-five million, three hundred twenty-seven thousand, six hundred sixty-seven".