71587667 has 8 divisors (see below), whose sum is σ = 73520640. Its totient is φ = 69680520.

The previous prime is 71587657. The next prime is 71587673. The reversal of 71587667 is 76678517.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71587667 - 2⁴ = 71587651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71587657) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 773 + ... + 11990.

It is an arithmetic number, because the mean of its divisors is an integer number (9190080).

Almost surely, 2^71587667 is an apocalyptic number.

71587667 is a deficient number, since it is larger than the sum of its proper divisors (1932973).

71587667 is a wasteful number, since it uses less digits than its factorization.

71587667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12913.

The product of its digits is 493920, while the sum is 47.

The square root of 71587667 is about 8460.9495330016. The cubic root of 71587667 is about 415.2210889499.

The spelling of 71587667 in words is "seventy-one million, five hundred eighty-seven thousand, six hundred sixty-seven".