67972427 has 2 divisors, whose sum is σ = 67972428. Its totient is φ = 67972426.

The previous prime is 67972397. The next prime is 67972439. The reversal of 67972427 is 72427976.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 67972427 - 2¹² = 67968331 is a prime.

It is not a weakly prime, because it can be changed into another prime (67971427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33986213 + 33986214.

It is an arithmetic number, because the mean of its divisors is an integer number (33986214).

Almost surely, 2^67972427 is an apocalyptic number.

67972427 is a deficient number, since it is larger than the sum of its proper divisors (1).

67972427 is an equidigital number, since it uses as much as digits as its factorization.

67972427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 296352, while the sum is 44.

The square root of 67972427 is about 8244.5392230251. The cubic root of 67972427 is about 408.1103343628.

The spelling of 67972427 in words is "sixty-seven million, nine hundred seventy-two thousand, four hundred twenty-seven".