660475390 has 8 divisors (see below), whose sum is σ = 1188855720. Its totient is φ = 264190152.

The previous prime is 660475373. The next prime is 660475411. The reversal of 660475390 is 93574066.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33023760 + ... + 33023779.

It is an arithmetic number, because the mean of its divisors is an integer number (148606965).

Almost surely, 2^660475390 is an apocalyptic number.

660475390 is a deficient number, since it is larger than the sum of its proper divisors (528380330).

660475390 is a wasteful number, since it uses less digits than its factorization.

660475390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66047546.

The product of its (nonzero) digits is 136080, while the sum is 40.

The square root of 660475390 is about 25699.7157571830. The cubic root of 660475390 is about 870.8677606000.

The spelling of 660475390 in words is "six hundred sixty million, four hundred seventy-five thousand, three hundred ninety".