1385657 has 8 divisors (see below), whose sum is σ = 1705536. Its totient is φ = 1096272.

The previous prime is 1385647. The next prime is 1385693. The reversal of 1385657 is 7565831.

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 1385657 - 2⁸ = 1385401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1385647) 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, 7523 + ... + 7704.

It is an arithmetic number, because the mean of its divisors is an integer number (213192).

2^1385657 is an apocalyptic number.

It is an amenable number.

1385657 is a deficient number, since it is larger than the sum of its proper divisors (319879).

1385657 is a wasteful number, since it uses less digits than its factorization.

1385657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15247.

The product of its digits is 25200, while the sum is 35.

The square root of 1385657 is about 1177.1393290516. The cubic root of 1385657 is about 111.4855498175.

The spelling of 1385657 in words is "one million, three hundred eighty-five thousand, six hundred fifty-seven".