660536369 has 8 divisors (see below), whose sum is σ = 663989760. Its totient is φ = 657090000.

The previous prime is 660536351. The next prime is 660536381. The reversal of 660536369 is 963635066.

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

It is a cyclic number.

It is not a de Polignac number, because 660536369 - 2²⁰ = 659487793 is a prime.

It is a super-2 number, since 2×660536369² = 872616589543408322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (660536389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 368327 + ... + 370115.

It is an arithmetic number, because the mean of its divisors is an integer number (82998720).

Almost surely, 2^660536369 is an apocalyptic number.

It is an amenable number.

660536369 is a deficient number, since it is larger than the sum of its proper divisors (3453391).

660536369 is a wasteful number, since it uses less digits than its factorization.

660536369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3511.

The product of its (nonzero) digits is 524880, while the sum is 44.

The square root of 660536369 is about 25700.9021047900. The cubic root of 660536369 is about 870.8945609985.

The spelling of 660536369 in words is "six hundred sixty million, five hundred thirty-six thousand, three hundred sixty-nine".