1248645 has 8 divisors (see below), whose sum is σ = 1997856. Its totient is φ = 665936.

The previous prime is 1248641. The next prime is 1248671. The reversal of 1248645 is 5468421.

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

It is a cyclic number.

It is not a de Polignac number, because 1248645 - 2² = 1248641 is a prime.

It is a super-2 number, since 2×1248645² = 3118228672050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1248641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41607 + ... + 41636.

It is an arithmetic number, because the mean of its divisors is an integer number (249732).

2^1248645 is an apocalyptic number.

1248645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1248645 is a deficient number, since it is larger than the sum of its proper divisors (749211).

1248645 is an equidigital number, since it uses as much as digits as its factorization.

1248645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83251.

The product of its digits is 7680, while the sum is 30.

The square root of 1248645 is about 1117.4278500199. The cubic root of 1248645 is about 107.6827969754.

It can be divided in two parts, 12 and 48645, that multiplied together give a triangular number (583740 = T₁₀₈₀).

The spelling of 1248645 in words is "one million, two hundred forty-eight thousand, six hundred forty-five".