67671071 has 4 divisors (see below), whose sum is σ = 72876552. Its totient is φ = 62465592.

The previous prime is 67671031. The next prime is 67671151. The reversal of 67671071 is 17017676.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67671071 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 (67671001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2602721 + ... + 2602746.

It is an arithmetic number, because the mean of its divisors is an integer number (18219138).

Almost surely, 2^67671071 is an apocalyptic number.

67671071 is a deficient number, since it is larger than the sum of its proper divisors (5205481).

67671071 is a wasteful number, since it uses less digits than its factorization.

67671071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5205480.

The product of its (nonzero) digits is 12348, while the sum is 35.

The square root of 67671071 is about 8226.2428240358. The cubic root of 67671071 is about 407.5063213041.

The spelling of 67671071 in words is "sixty-seven million, six hundred seventy-one thousand, seventy-one".