660072674 has 8 divisors (see below), whose sum is σ = 1016868828. Its totient is φ = 321116400.

The previous prime is 660072671. The next prime is 660072691. The reversal of 660072674 is 476270066.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 569156449 + 90916225 = 23857^2 + 9535^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (660072671) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 4459877 + ... + 4460024.

Almost surely, 2^660072674 is an apocalyptic number.

660072674 is a deficient number, since it is larger than the sum of its proper divisors (356796154).

660072674 is a wasteful number, since it uses less digits than its factorization.

660072674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8919940.

The product of its (nonzero) digits is 84672, while the sum is 38.

The square root of 660072674 is about 25691.8795342030. The cubic root of 660072674 is about 870.6907246391.

The spelling of 660072674 in words is "six hundred sixty million, seventy-two thousand, six hundred seventy-four".