1066039990 has 16 divisors (see below), whose sum is σ = 1919288160. Its totient is φ = 426323520.

The previous prime is 1066039987. The next prime is 1066039993. The reversal of 1066039990 is 999306601.

It is an interprime number because it is at equal distance from previous prime (1066039987) and next prime (1066039993).

It is a super-2 number, since 2×1066039990² = 2272882520558400200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066039993) by changing a digit.

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, 55231 + ... + 71989.

It is an arithmetic number, because the mean of its divisors is an integer number (119955510).

Almost surely, 2^1066039990 is an apocalyptic number.

1066039990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1066039990 is a deficient number, since it is larger than the sum of its proper divisors (853248170).

1066039990 is a wasteful number, since it uses less digits than its factorization.

1066039990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23127.

The product of its (nonzero) digits is 78732, while the sum is 43.

The square root of 1066039990 is about 32650.2678396365. The cubic root of 1066039990 is about 1021.5457755591.

The spelling of 1066039990 in words is "one billion, sixty-six million, thirty-nine thousand, nine hundred ninety".