1357643 has 12 divisors (see below), whose sum is σ = 1600560. Its totient is φ = 1148112.

The previous prime is 1357619. The next prime is 1357651. The reversal of 1357643 is 3467531.

It is not a de Polignac number, because 1357643 - 2¹⁴ = 1341259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1357673) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4913 + ... + 5181.

It is an arithmetic number, because the mean of its divisors is an integer number (133380).

2^1357643 is an apocalyptic number.

1357643 is a deficient number, since it is larger than the sum of its proper divisors (242917).

1357643 is a wasteful number, since it uses less digits than its factorization.

1357643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386 (or 379 counting only the distinct ones).

The product of its digits is 7560, while the sum is 29.

The square root of 1357643 is about 1165.1793853309. The cubic root of 1357643 is about 110.7291233471.

The spelling of 1357643 in words is "one million, three hundred fifty-seven thousand, six hundred forty-three".