1066685434 has 16 divisors (see below), whose sum is σ = 1733548608. Its totient is φ = 490295232.

The previous prime is 1066685419. The next prime is 1066685449. The reversal of 1066685434 is 4345866601.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1066685419) and next prime (1066685449).

It is a super-2 number, since 2×1066685434² = 2275635630215536712, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 363342 + ... + 366265.

It is an arithmetic number, because the mean of its divisors is an integer number (108346788).

Almost surely, 2^1066685434 is an apocalyptic number.

1066685434 is a deficient number, since it is larger than the sum of its proper divisors (666863174).

1066685434 is a wasteful number, since it uses less digits than its factorization.

1066685434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 729669.

The product of its (nonzero) digits is 414720, while the sum is 43.

The square root of 1066685434 is about 32660.1505507859. The cubic root of 1066685434 is about 1021.7519021498.

It can be divided in two parts, 10666 and 85434, that added together give a square (96100 = 310²).

The spelling of 1066685434 in words is "one billion, sixty-six million, six hundred eighty-five thousand, four hundred thirty-four".