71667055 has 4 divisors (see below), whose sum is σ = 86000472. Its totient is φ = 57333640.

The previous prime is 71667049. The next prime is 71667061. The reversal of 71667055 is 55076617.

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

It is an interprime number because it is at equal distance from previous prime (71667049) and next prime (71667061).

It is not a de Polignac number, because 71667055 - 2³ = 71667047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7166701 + ... + 7166710.

It is an arithmetic number, because the mean of its divisors is an integer number (21500118).

Almost surely, 2^71667055 is an apocalyptic number.

71667055 is a deficient number, since it is larger than the sum of its proper divisors (14333417).

71667055 is a wasteful number, since it uses less digits than its factorization.

71667055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14333416.

The product of its (nonzero) digits is 44100, while the sum is 37.

The square root of 71667055 is about 8465.6396686842. The cubic root of 71667055 is about 415.3745203792.

The spelling of 71667055 in words is "seventy-one million, six hundred sixty-seven thousand, fifty-five".