667231365724 has 48 divisors (see below), whose sum is σ = 1466890419456. Its totient is φ = 257975827200.

The previous prime is 667231365721. The next prime is 667231365727. The reversal of 667231365724 is 427563132766.

667231365724 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (667231365721) and next prime (667231365727).

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667231365721) 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, 8228109 + ... + 8308804.

It is an arithmetic number, because the mean of its divisors is an integer number (30560217072).

Almost surely, 2^667231365724 is an apocalyptic number.

It is an amenable number.

667231365724 is an abundant number, since it is smaller than the sum of its proper divisors (799659053732).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

667231365724 is a wasteful number, since it uses less digits than its factorization.

667231365724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16537066 (or 16537064 counting only the distinct ones).

The product of its digits is 7620480, while the sum is 52.

The spelling of 667231365724 in words is "six hundred sixty-seven billion, two hundred thirty-one million, three hundred sixty-five thousand, seven hundred twenty-four".