67472189 has 2 divisors, whose sum is σ = 67472190. Its totient is φ = 67472188.

The previous prime is 67472147. The next prime is 67472219. The reversal of 67472189 is 98127476.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59799289 + 7672900 = 7733^2 + 2770^2 .

It is a cyclic number.

It is not a de Polignac number, because 67472189 - 2⁸ = 67471933 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67472989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33736094 + 33736095.

It is an arithmetic number, because the mean of its divisors is an integer number (33736095).

Almost surely, 2^67472189 is an apocalyptic number.

It is an amenable number.

67472189 is a deficient number, since it is larger than the sum of its proper divisors (1).

67472189 is an equidigital number, since it uses as much as digits as its factorization.

67472189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 169344, while the sum is 44.

The square root of 67472189 is about 8214.1456646446. The cubic root of 67472189 is about 407.1067157941.

The spelling of 67472189 in words is "sixty-seven million, four hundred seventy-two thousand, one hundred eighty-nine".