67425643 has 2 divisors, whose sum is σ = 67425644. Its totient is φ = 67425642.

The previous prime is 67425619. The next prime is 67425649. The reversal of 67425643 is 34652476.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 67425643 - 2²¹ = 65328491 is a prime.

It is not a weakly prime, because it can be changed into another prime (67425649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33712821 + 33712822.

It is an arithmetic number, because the mean of its divisors is an integer number (33712822).

Almost surely, 2^67425643 is an apocalyptic number.

67425643 is a deficient number, since it is larger than the sum of its proper divisors (1).

67425643 is an equidigital number, since it uses as much as digits as its factorization.

67425643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 37.

The square root of 67425643 is about 8211.3118927489. The cubic root of 67425643 is about 407.0130794453.

The spelling of 67425643 in words is "sixty-seven million, four hundred twenty-five thousand, six hundred forty-three".