1066786545 has 16 divisors (see below), whose sum is σ = 1862027712. Its totient is φ = 517229760.

The previous prime is 1066786541. The next prime is 1066786561. The reversal of 1066786545 is 5456876601.

It is not a de Polignac number, because 1066786545 - 2² = 1066786541 is a prime.

It is a super-2 number, since 2×1066786545² = 2276067065186074050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1066786494 and 1066786503.

It is not an unprimeable number, because it can be changed into a prime (1066786541) 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, 3232522 + ... + 3232851.

It is an arithmetic number, because the mean of its divisors is an integer number (116376732).

Almost surely, 2^1066786545 is an apocalyptic number.

1066786545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1066786545 is a deficient number, since it is larger than the sum of its proper divisors (795241167).

1066786545 is a wasteful number, since it uses less digits than its factorization.

1066786545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6465392.

The product of its (nonzero) digits is 1209600, while the sum is 48.

The square root of 1066786545 is about 32661.6984402220. The cubic root of 1066786545 is about 1021.7841850482.

The spelling of 1066786545 in words is "one billion, sixty-six million, seven hundred eighty-six thousand, five hundred forty-five".