1264985 has 8 divisors (see below), whose sum is σ = 1524096. Its totient is φ = 1007920.

The previous prime is 1264981. The next prime is 1264997. The reversal of 1264985 is 5894621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1264985 - 2² = 1264981 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1264981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1862 + ... + 2448.

It is an arithmetic number, because the mean of its divisors is an integer number (190512).

2^1264985 is an apocalyptic number.

It is an amenable number.

1264985 is a deficient number, since it is larger than the sum of its proper divisors (259111).

1264985 is an equidigital number, since it uses as much as digits as its factorization.

1264985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1023.

The product of its digits is 17280, while the sum is 35.

The square root of 1264985 is about 1124.7155195871. The cubic root of 1264985 is about 108.1504818154.

The spelling of 1264985 in words is "one million, two hundred sixty-four thousand, nine hundred eighty-five".