1602643 has 6 divisors (see below), whose sum is σ = 1864356. Its totient is φ = 1373652.

The previous prime is 1602637. The next prime is 1602661. The reversal of 1602643 is 3462061.

It is not a de Polignac number, because 1602643 - 2⁵ = 1602611 is a prime.

It is an Ulam number.

It is a Duffinian number.

1602643 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1602143) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16305 + ... + 16402.

It is an arithmetic number, because the mean of its divisors is an integer number (310726).

2^1602643 is an apocalyptic number.

1602643 is a deficient number, since it is larger than the sum of its proper divisors (261713).

1602643 is an equidigital number, since it uses as much as digits as its factorization.

1602643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32721 (or 32714 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 1602643 is about 1265.9553704614. The cubic root of 1602643 is about 117.0250755906.

The spelling of 1602643 in words is "one million, six hundred two thousand, six hundred forty-three".