660200697 has 48 divisors (see below), whose sum is σ = 1044410640. Its totient is φ = 401836032.

The previous prime is 660200687. The next prime is 660200713. The reversal of 660200697 is 796002066.

It can be written as a sum of positive squares in 8 ways, for example, as 388247616 + 271953081 = 19704^2 + 16491^2 .

It is not a de Polignac number, because 660200697 - 2¹⁸ = 659938553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (660200687) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 3420633 + ... + 3420825.

It is an arithmetic number, because the mean of its divisors is an integer number (21758555).

Almost surely, 2^660200697 is an apocalyptic number.

It is an amenable number.

660200697 is a deficient number, since it is larger than the sum of its proper divisors (384209943).

660200697 is a wasteful number, since it uses less digits than its factorization.

660200697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411 (or 382 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 660200697 is about 25694.3709204954. The cubic root of 660200697 is about 870.7470119932.

The spelling of 660200697 in words is "six hundred sixty million, two hundred thousand, six hundred ninety-seven".