1566873345 has 32 divisors (see below), whose sum is σ = 2581805952. Its totient is φ = 810980352.

The previous prime is 1566873337. The next prime is 1566873349. The reversal of 1566873345 is 5433786651.

It is not a de Polignac number, because 1566873345 - 2³ = 1566873337 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 1566873294 and 1566873303.

It is not an unprimeable number, because it can be changed into a prime (1566873349) 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, 93529 + ... + 109001.

It is an arithmetic number, because the mean of its divisors is an integer number (80681436).

Almost surely, 2^1566873345 is an apocalyptic number.

1566873345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1566873345 is a deficient number, since it is larger than the sum of its proper divisors (1014932607).

1566873345 is a wasteful number, since it uses less digits than its factorization.

1566873345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15681.

The product of its digits is 1814400, while the sum is 48.

The square root of 1566873345 is about 39583.7510223576. The cubic root of 1566873345 is about 1161.4788275976.

The spelling of 1566873345 in words is "one billion, five hundred sixty-six million, eight hundred seventy-three thousand, three hundred forty-five".