67028401 has 4 divisors (see below), whose sum is σ = 73121904. Its totient is φ = 60934900.

The previous prime is 67028387. The next prime is 67028407. The reversal of 67028401 is 10482076.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 67028401 - 2⁵ = 67028369 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 67028401.

It is not an unprimeable number, because it can be changed into a prime (67028407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3046735 + ... + 3046756.

It is an arithmetic number, because the mean of its divisors is an integer number (18280476).

Almost surely, 2^67028401 is an apocalyptic number.

It is an amenable number.

67028401 is a deficient number, since it is larger than the sum of its proper divisors (6093503).

67028401 is a wasteful number, since it uses less digits than its factorization.

67028401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6093502.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 67028401 is about 8187.0874552554. The cubic root of 67028401 is about 406.2121910059.

The spelling of 67028401 in words is "sixty-seven million, twenty-eight thousand, four hundred one".