67140569 has 2 divisors, whose sum is σ = 67140570. Its totient is φ = 67140568.

The previous prime is 67140553. The next prime is 67140571. The reversal of 67140569 is 96504176.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66667225 + 473344 = 8165^2 + 688^2 .

It is a cyclic number.

It is not a de Polignac number, because 67140569 - 2⁴ = 67140553 is a prime.

It is a super-2 number, since 2×67140569² = 9015712011287522, which contains 22 as substring.

Together with 67140571, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (67140869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33570284 + 33570285.

It is an arithmetic number, because the mean of its divisors is an integer number (33570285).

Almost surely, 2^67140569 is an apocalyptic number.

It is an amenable number.

67140569 is a deficient number, since it is larger than the sum of its proper divisors (1).

67140569 is an equidigital number, since it uses as much as digits as its factorization.

67140569 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 67140569 is about 8193.9348911253. The cubic root of 67140569 is about 406.4386552895.

The spelling of 67140569 in words is "sixty-seven million, one hundred forty thousand, five hundred sixty-nine".