1066671958 has 16 divisors (see below), whose sum is σ = 1778398416. Its totient is φ = 475702240.

The previous prime is 1066671941. The next prime is 1066672007. The reversal of 1066671958 is 8591766601.

It is a happy number.

It is a super-2 number, since 2×1066671958² = 2275578131967107528, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 456241 + ... + 458572.

It is an arithmetic number, because the mean of its divisors is an integer number (111149901).

Almost surely, 2^1066671958 is an apocalyptic number.

1066671958 is a deficient number, since it is larger than the sum of its proper divisors (711726458).

1066671958 is a wasteful number, since it uses less digits than its factorization.

1066671958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 914879.

The product of its (nonzero) digits is 544320, while the sum is 49.

The square root of 1066671958 is about 32659.9442436756. The cubic root of 1066671958 is about 1021.7475993547.

The spelling of 1066671958 in words is "one billion, sixty-six million, six hundred seventy-one thousand, nine hundred fifty-eight".