1266965 has 16 divisors (see below), whose sum is σ = 1772928. Its totient is φ = 851136.

The previous prime is 1266953. The next prime is 1267009. The reversal of 1266965 is 5696621.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1266965 - 2⁴ = 1266949 is a prime.

It is a super-2 number, since 2×1266965² = 3210400622450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1514 + ... + 2196.

It is an arithmetic number, because the mean of its divisors is an integer number (110808).

2^1266965 is an apocalyptic number.

It is an amenable number.

1266965 is a deficient number, since it is larger than the sum of its proper divisors (505963).

1266965 is an equidigital number, since it uses as much as digits as its factorization.

1266965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748.

The product of its digits is 19440, while the sum is 35.

The square root of 1266965 is about 1125.5953980005. The cubic root of 1266965 is about 108.2068794079.

The spelling of 1266965 in words is "one million, two hundred sixty-six thousand, nine hundred sixty-five".