660325401 has 12 divisors (see below), whose sum is σ = 968040112. Its totient is φ = 433646136.

The previous prime is 660325399. The next prime is 660325403. The reversal of 660325401 is 104523066.

660325401 is a `hidden beast` number, since 6 + 603 + 2 + 54 + 0 + 1 = 666.

660325401 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 (660325399) and next prime (660325403).

It is not a de Polignac number, because 660325401 - 2¹ = 660325399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (660325403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 546931 + ... + 548136.

Almost surely, 2^660325401 is an apocalyptic number.

It is an amenable number.

660325401 is a deficient number, since it is larger than the sum of its proper divisors (307714711).

660325401 is a wasteful number, since it uses less digits than its factorization.

660325401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1095140 (or 1095137 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 660325401 is about 25696.7974852899. The cubic root of 660325401 is about 870.8018331002.

Adding to 660325401 its reverse (104523066), we get a palindrome (764848467).

The spelling of 660325401 in words is "six hundred sixty million, three hundred twenty-five thousand, four hundred one".