67408271 has 6 divisors (see below), whose sum is σ = 78413760. Its totient is φ = 57778476.

The previous prime is 67408261. The next prime is 67408283. The reversal of 67408271 is 17280476.

It is a happy number.

It is not a de Polignac number, because 67408271 - 2⁶ = 67408207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67408241) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 687791 + ... + 687888.

It is an arithmetic number, because the mean of its divisors is an integer number (13068960).

Almost surely, 2^67408271 is an apocalyptic number.

67408271 is a deficient number, since it is larger than the sum of its proper divisors (11005489).

67408271 is a wasteful number, since it uses less digits than its factorization.

67408271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1375693 (or 1375686 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 67408271 is about 8210.2540155588. The cubic root of 67408271 is about 406.9781212394.

The spelling of 67408271 in words is "sixty-seven million, four hundred eight thousand, two hundred seventy-one".