667060057 has 4 divisors (see below), whose sum is σ = 676197940. Its totient is φ = 657922176.

The previous prime is 667060039. The next prime is 667060063. The reversal of 667060057 is 750060766.

667060057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 458430921 + 208629136 = 21411^2 + 14444^2 .

It is a cyclic number.

It is not a de Polignac number, because 667060057 - 2⁷ = 667059929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 667059998 and 667060025.

It is not an unprimeable number, because it can be changed into a prime (667060657) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4568832 + ... + 4568977.

It is an arithmetic number, because the mean of its divisors is an integer number (169049485).

Almost surely, 2^667060057 is an apocalyptic number.

It is an amenable number.

667060057 is a deficient number, since it is larger than the sum of its proper divisors (9137883).

667060057 is an equidigital number, since it uses as much as digits as its factorization.

667060057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9137882.

The product of its (nonzero) digits is 52920, while the sum is 37.

The square root of 667060057 is about 25827.5058222818. The cubic root of 667060057 is about 873.7522600045.

The spelling of 667060057 in words is "six hundred sixty-seven million, sixty thousand, fifty-seven".