667552711 has 8 divisors (see below), whose sum is σ = 789225120. Its totient is φ = 552457248.

The previous prime is 667552687. The next prime is 667552757. The reversal of 667552711 is 117255766.

It is a happy number.

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

It is not a de Polignac number, because 667552711 - 2⁹ = 667552199 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 (667552771) 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, 1644016 + ... + 1644421.

It is an arithmetic number, because the mean of its divisors is an integer number (98653140).

Almost surely, 2^667552711 is an apocalyptic number.

667552711 is a deficient number, since it is larger than the sum of its proper divisors (121672409).

667552711 is a wasteful number, since it uses less digits than its factorization.

667552711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3288473.

The product of its digits is 88200, while the sum is 40.

The square root of 667552711 is about 25837.0414521477. The cubic root of 667552711 is about 873.9673089166.

The spelling of 667552711 in words is "six hundred sixty-seven million, five hundred fifty-two thousand, seven hundred eleven".