1338657 has 8 divisors (see below), whose sum is σ = 1790880. Its totient is φ = 889440.

The previous prime is 1338653. The next prime is 1338661. The reversal of 1338657 is 7568331.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1338653) and next prime (1338661).

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

It is not a de Polignac number, because 1338657 - 2² = 1338653 is a prime.

1338657 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1338653) 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, 682 + ... + 1772.

It is an arithmetic number, because the mean of its divisors is an integer number (223860).

2^1338657 is an apocalyptic number.

It is an amenable number.

1338657 is a deficient number, since it is larger than the sum of its proper divisors (452223).

1338657 is a wasteful number, since it uses less digits than its factorization.

1338657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1503.

The product of its digits is 15120, while the sum is 33.

The square root of 1338657 is about 1157.0034572118. The cubic root of 1338657 is about 110.2105334336.

The spelling of 1338657 in words is "one million, three hundred thirty-eight thousand, six hundred fifty-seven".