1660023345 has 16 divisors (see below), whose sum is σ = 2656584000. Its totient is φ = 885163584.

The previous prime is 1660023319. The next prime is 1660023347. The reversal of 1660023345 is 5433200661.

It is not a de Polignac number, because 1660023345 - 2¹³ = 1660015153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1660023347) 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, 97531 + ... + 113279.

It is an arithmetic number, because the mean of its divisors is an integer number (166036500).

Almost surely, 2^1660023345 is an apocalyptic number.

1660023345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1660023345 is a deficient number, since it is larger than the sum of its proper divisors (996560655).

1660023345 is a wasteful number, since it uses less digits than its factorization.

1660023345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22784.

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 1660023345 is about 40743.3840641643. The cubic root of 1660023345 is about 1184.0536980398.

The spelling of 1660023345 in words is "one billion, six hundred sixty million, twenty-three thousand, three hundred forty-five".