1264605 has 8 divisors (see below), whose sum is σ = 2023392. Its totient is φ = 674448.

The previous prime is 1264597. The next prime is 1264607. The reversal of 1264605 is 5064621.

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

It is not a de Polignac number, because 1264605 - 2³ = 1264597 is a prime.

1264605 is a lucky number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1264607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42139 + ... + 42168.

It is an arithmetic number, because the mean of its divisors is an integer number (252924).

2^1264605 is an apocalyptic number.

1264605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1264605 is a deficient number, since it is larger than the sum of its proper divisors (758787).

1264605 is an equidigital number, since it uses as much as digits as its factorization.

1264605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84315.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 1264605 is about 1124.5465752916. The cubic root of 1264605 is about 108.1396513052.

The spelling of 1264605 in words is "one million, two hundred sixty-four thousand, six hundred five".