1265671 has 4 divisors (see below), whose sum is σ = 1380744. Its totient is φ = 1150600.

The previous prime is 1265657. The next prime is 1265681. The reversal of 1265671 is 1765621.

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

It is not a de Polignac number, because 1265671 - 2⁵ = 1265639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1265611) 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, 57520 + ... + 57541.

It is an arithmetic number, because the mean of its divisors is an integer number (345186).

2^1265671 is an apocalyptic number.

1265671 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1265671 is a deficient number, since it is larger than the sum of its proper divisors (115073).

1265671 is a wasteful number, since it uses less digits than its factorization.

1265671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115072.

The product of its digits is 2520, while the sum is 28.

The square root of 1265671 is about 1125.0204442587. The cubic root of 1265671 is about 108.1700282457.

It can be divided in two parts, 1265 and 671, that added together give a square (1936 = 44²).

The spelling of 1265671 in words is "one million, two hundred sixty-five thousand, six hundred seventy-one".