660331426 has 8 divisors (see below), whose sum is σ = 1033562304. Its totient is φ = 315810660.

The previous prime is 660331411. The next prime is 660331439. The reversal of 660331426 is 624133066.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7177470 + ... + 7177561.

It is an arithmetic number, because the mean of its divisors is an integer number (129195288).

Almost surely, 2^660331426 is an apocalyptic number.

660331426 is a deficient number, since it is larger than the sum of its proper divisors (373230878).

660331426 is a wasteful number, since it uses less digits than its factorization.

660331426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14355056.

The product of its (nonzero) digits is 15552, while the sum is 31.

The square root of 660331426 is about 25696.9147175298. The cubic root of 660331426 is about 870.8044815748.

The spelling of 660331426 in words is "six hundred sixty million, three hundred thirty-one thousand, four hundred twenty-six".