1660610545 has 32 divisors (see below), whose sum is σ = 2296068480. Its totient is φ = 1140272640.

The previous prime is 1660610543. The next prime is 1660610561. The reversal of 1660610545 is 5450160661.

It is a happy number.

It is not a de Polignac number, because 1660610545 - 2¹ = 1660610543 is a prime.

It is a super-3 number, since 3×1660610545³ (a number of 29 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1660610545.

It is not an unprimeable number, because it can be changed into a prime (1660610543) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 324547 + ... + 329623.

It is an arithmetic number, because the mean of its divisors is an integer number (71752140).

Almost surely, 2^1660610545 is an apocalyptic number.

It is an amenable number.

1660610545 is a deficient number, since it is larger than the sum of its proper divisors (635457935).

1660610545 is a wasteful number, since it uses less digits than its factorization.

1660610545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5425.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 1660610545 is about 40750.5895049385. The cubic root of 1660610545 is about 1184.1932933392.

The spelling of 1660610545 in words is "one billion, six hundred sixty million, six hundred ten thousand, five hundred forty-five".