667072471 has 8 divisors (see below), whose sum is σ = 743158080. Its totient is φ = 594525792.

The previous prime is 667072429. The next prime is 667072489. The reversal of 667072471 is 174270766.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-667072471 is a prime.

It is a super-3 number, since 3×667072471³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667072421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 884335 + ... + 885088.

It is an arithmetic number, because the mean of its divisors is an integer number (92894760).

Almost surely, 2^667072471 is an apocalyptic number.

667072471 is a deficient number, since it is larger than the sum of its proper divisors (76085609).

667072471 is a wasteful number, since it uses less digits than its factorization.

667072471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1769465.

The product of its (nonzero) digits is 98784, while the sum is 40.

The square root of 667072471 is about 25827.7461463442. The cubic root of 667072471 is about 873.7576801528.

The spelling of 667072471 in words is "six hundred sixty-seven million, seventy-two thousand, four hundred seventy-one".