67064947 has 2 divisors, whose sum is σ = 67064948. Its totient is φ = 67064946.

The previous prime is 67064869. The next prime is 67064969. The reversal of 67064947 is 74946076.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 67064947 - 2⁷ = 67064819 is a prime.

It is a super-2 number, since 2×67064947² = 8995414232225618, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (67064147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33532473 + 33532474.

It is an arithmetic number, because the mean of its divisors is an integer number (33532474).

Almost surely, 2^67064947 is an apocalyptic number.

67064947 is a deficient number, since it is larger than the sum of its proper divisors (1).

67064947 is an equidigital number, since it uses as much as digits as its factorization.

67064947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 254016, while the sum is 43.

The square root of 67064947 is about 8189.3190803632. The cubic root of 67064947 is about 406.2860041621.

The spelling of 67064947 in words is "sixty-seven million, sixty-four thousand, nine hundred forty-seven".