667038071 has 8 divisors (see below), whose sum is σ = 762671520. Its totient is φ = 571490208.

The previous prime is 667038041. The next prime is 667038079. The reversal of 667038071 is 170830766.

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 667038071 - 2⁶ = 667038007 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 (667038079) 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, 3716 + ... + 36713.

It is an arithmetic number, because the mean of its divisors is an integer number (95333940).

Almost surely, 2^667038071 is an apocalyptic number.

667038071 is a deficient number, since it is larger than the sum of its proper divisors (95633449).

667038071 is a wasteful number, since it uses less digits than its factorization.

667038071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42793.

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 667038071 is about 25827.0801872763. The cubic root of 667038071 is about 873.7426604050.

The spelling of 667038071 in words is "six hundred sixty-seven million, thirty-eight thousand, seventy-one".