67990043 has 16 divisors (see below), whose sum is σ = 76204800. Its totient is φ = 60134880.

The previous prime is 67990033. The next prime is 67990057. The reversal of 67990043 is 34009976.

It is a cyclic number.

It is not a de Polignac number, because 67990043 - 2⁸ = 67989787 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 67989979 and 67990006.

It is not an unprimeable number, because it can be changed into a prime (67990033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80618 + ... + 81456.

It is an arithmetic number, because the mean of its divisors is an integer number (4762800).

Almost surely, 2^67990043 is an apocalyptic number.

67990043 is a deficient number, since it is larger than the sum of its proper divisors (8214757).

67990043 is a wasteful number, since it uses less digits than its factorization.

67990043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1042.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 67990043 is about 8245.6074973285. The cubic root of 67990043 is about 408.1455871409.

The spelling of 67990043 in words is "sixty-seven million, nine hundred ninety thousand, forty-three".