667214051 has 16 divisors (see below), whose sum is σ = 813980160. Its totient is φ = 534159360.

The previous prime is 667214027. The next prime is 667214057. The reversal of 667214051 is 150412766.

667214051 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-667214051 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 667213999 and 667214017.

It is not an unprimeable number, because it can be changed into a prime (667214057) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25886 + ... + 44771.

It is an arithmetic number, because the mean of its divisors is an integer number (50873760).

Almost surely, 2^667214051 is an apocalyptic number.

667214051 is a deficient number, since it is larger than the sum of its proper divisors (146766109).

667214051 is a wasteful number, since it uses less digits than its factorization.

667214051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70754.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 667214051 is about 25830.4868517804. The cubic root of 667214051 is about 873.8194914586.

The spelling of 667214051 in words is "six hundred sixty-seven million, two hundred fourteen thousand, fifty-one".