667576497 has 16 divisors (see below), whose sum is σ = 1033937792. Its totient is φ = 375217920.

The previous prime is 667576423. The next prime is 667576523. The reversal of 667576497 is 794675766.

667576497 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 667576497 - 2⁷ = 667576369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (667576097) 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, 259288 + ... + 261849.

It is an arithmetic number, because the mean of its divisors is an integer number (64621112).

Almost surely, 2^667576497 is an apocalyptic number.

It is an amenable number.

667576497 is a deficient number, since it is larger than the sum of its proper divisors (366361295).

667576497 is a wasteful number, since it uses less digits than its factorization.

667576497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521208.

The product of its digits is 13335840, while the sum is 57.

The square root of 667576497 is about 25837.5017561683. The cubic root of 667576497 is about 873.9776890904.

The spelling of 667576497 in words is "six hundred sixty-seven million, five hundred seventy-six thousand, four hundred ninety-seven".