667672624501 has 4 divisors (see below), whose sum is σ = 674555847532. Its totient is φ = 660789401472.

The previous prime is 667672624447. The next prime is 667672624513. The reversal of 667672624501 is 105426276766.

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 262446167025 + 405226457476 = 512295^2 + 636574^2 .

It is a cyclic number.

It is not a de Polignac number, because 667672624501 - 2¹⁹ = 667672100213 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 (667672624571) 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, 3441611370 + ... + 3441611563.

It is an arithmetic number, because the mean of its divisors is an integer number (168638961883).

Almost surely, 2^667672624501 is an apocalyptic number.

It is an amenable number.

667672624501 is a deficient number, since it is larger than the sum of its proper divisors (6883223031).

667672624501 is an equidigital number, since it uses as much as digits as its factorization.

667672624501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6883223030.

The product of its (nonzero) digits is 5080320, while the sum is 52.

The spelling of 667672624501 in words is "six hundred sixty-seven billion, six hundred seventy-two million, six hundred twenty-four thousand, five hundred one".