67955871 has 4 divisors (see below), whose sum is σ = 90607832. Its totient is φ = 45303912.

The previous prime is 67955821. The next prime is 67955887. The reversal of 67955871 is 17855976.

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

It is not a de Polignac number, because 67955871 - 2¹³ = 67947679 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 67955871.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67955821) 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, 11325976 + ... + 11325981.

It is an arithmetic number, because the mean of its divisors is an integer number (22651958).

Almost surely, 2^67955871 is an apocalyptic number.

67955871 is a deficient number, since it is larger than the sum of its proper divisors (22651961).

67955871 is a wasteful number, since it uses less digits than its factorization.

67955871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22651960.

The product of its digits is 529200, while the sum is 48.

The square root of 67955871 is about 8243.5351033401. The cubic root of 67955871 is about 408.0771972823.

The spelling of 67955871 in words is "sixty-seven million, nine hundred fifty-five thousand, eight hundred seventy-one".