67400071 has 2 divisors, whose sum is σ = 67400072. Its totient is φ = 67400070.

The previous prime is 67400063. The next prime is 67400101. The reversal of 67400071 is 17000476.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 67400071 - 2³ = 67400063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67401071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33700035 + 33700036.

It is an arithmetic number, because the mean of its divisors is an integer number (33700036).

Almost surely, 2^67400071 is an apocalyptic number.

67400071 is a deficient number, since it is larger than the sum of its proper divisors (1).

67400071 is an equidigital number, since it uses as much as digits as its factorization.

67400071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 67400071 is about 8209.7546248350. The cubic root of 67400071 is about 406.9616180424.

The spelling of 67400071 in words is "sixty-seven million, four hundred thousand, seventy-one".