667070667 has 48 divisors (see below), whose sum is σ = 1070275680. Its totient is φ = 410402304.

The previous prime is 667070659. The next prime is 667070713. The reversal of 667070667 is 766070766.

It is a happy number.

667070667 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 667070667 - 2³ = 667070659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (667070647) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 412753 + ... + 414365.

It is an arithmetic number, because the mean of its divisors is an integer number (22297410).

Almost surely, 2^667070667 is an apocalyptic number.

667070667 is a deficient number, since it is larger than the sum of its proper divisors (403205013).

667070667 is a wasteful number, since it uses less digits than its factorization.

667070667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1709 (or 1686 counting only the distinct ones).

The product of its (nonzero) digits is 444528, while the sum is 45.

The square root of 667070667 is about 25827.7112226384. The cubic root of 667070667 is about 873.7568925021.

Subtracting 667070667 from its reverse (766070766), we obtain a palindrome (99000099).

The spelling of 667070667 in words is "six hundred sixty-seven million, seventy thousand, six hundred sixty-seven".