1072643 has 12 divisors (see below), whose sum is σ = 1269288. Its totient is φ = 898560.

The previous prime is 1072637. The next prime is 1072657. The reversal of 1072643 is 3462701.

It is not a de Polignac number, because 1072643 - 2⁴ = 1072627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1072613) 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, 1571 + ... + 2147.

It is an arithmetic number, because the mean of its divisors is an integer number (105774).

2^1072643 is an apocalyptic number.

1072643 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1072643 is a deficient number, since it is larger than the sum of its proper divisors (196645).

1072643 is a wasteful number, since it uses less digits than its factorization.

1072643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614 (or 601 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 1072643 is about 1035.6847976098. The cubic root of 1072643 is about 102.3650574034.

The spelling of 1072643 in words is "one million, seventy-two thousand, six hundred forty-three".