660693495 has 128 divisors (see below), whose sum is σ = 1379524608. Its totient is φ = 262080000.

The previous prime is 660693493. The next prime is 660693503. The reversal of 660693495 is 594396066.

It is a happy number.

660693495 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 660693495 - 2¹ = 660693493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660693493) 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 127 ways as a sum of consecutive naturals, for example, 2632120 + ... + 2632370.

It is an arithmetic number, because the mean of its divisors is an integer number (10777536).

Almost surely, 2^660693495 is an apocalyptic number.

660693495 is an abundant number, since it is smaller than the sum of its proper divisors (718831113).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

660693495 is a wasteful number, since it uses less digits than its factorization.

660693495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373.

The product of its (nonzero) digits is 1049760, while the sum is 48.

The square root of 660693495 is about 25703.9587417970. The cubic root of 660693495 is about 870.9636106054.

The spelling of 660693495 in words is "six hundred sixty million, six hundred ninety-three thousand, four hundred ninety-five".