660043545 has 16 divisors (see below), whose sum is σ = 1206936960. Its totient is φ = 301734144.

The previous prime is 660043541. The next prime is 660043597. The reversal of 660043545 is 545340066.

It is not a de Polignac number, because 660043545 - 2² = 660043541 is a prime.

It is not an unprimeable number, because it can be changed into a prime (660043541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3142960 + ... + 3143169.

It is an arithmetic number, because the mean of its divisors is an integer number (75433560).

Almost surely, 2^660043545 is an apocalyptic number.

It is an amenable number.

660043545 is a deficient number, since it is larger than the sum of its proper divisors (546893415).

660043545 is a wasteful number, since it uses less digits than its factorization.

660043545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6286144.

The product of its (nonzero) digits is 43200, while the sum is 33.

The square root of 660043545 is about 25691.3126367650. The cubic root of 660043545 is about 870.6779165933.

The spelling of 660043545 in words is "six hundred sixty million, forty-three thousand, five hundred forty-five".