667527742 has 32 divisors (see below), whose sum is σ = 1188357120. Its totient is φ = 275153760.

The previous prime is 667527737. The next prime is 667527761. The reversal of 667527742 is 247725766.

It is a junction number, because it is equal to n+sod(n) for n = 667527692 and 667527701.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106993 + ... + 113059.

It is an arithmetic number, because the mean of its divisors is an integer number (37136160).

Almost surely, 2^667527742 is an apocalyptic number.

667527742 is a deficient number, since it is larger than the sum of its proper divisors (520829378).

667527742 is a wasteful number, since it uses less digits than its factorization.

667527742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6376.

The product of its digits is 987840, while the sum is 46.

The square root of 667527742 is about 25836.5582460203. The cubic root of 667527742 is about 873.9564122181.

The spelling of 667527742 in words is "six hundred sixty-seven million, five hundred twenty-seven thousand, seven hundred forty-two".