1066646004 has 24 divisors (see below), whose sum is σ = 2490283488. Its totient is φ = 355342560.

The previous prime is 1066645981. The next prime is 1066646017. The reversal of 1066646004 is 4006466601.

It is a super-2 number, since 2×1066646004² = 2275467395698336032, 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, 3427 + ... + 46314.

It is an arithmetic number, because the mean of its divisors is an integer number (103761812).

Almost surely, 2^1066646004 is an apocalyptic number.

It is an amenable number.

1066646004 is an abundant number, since it is smaller than the sum of its proper divisors (1423637484).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1066646004 is a wasteful number, since it uses less digits than its factorization.

1066646004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51535 (or 51533 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 1066646004 is about 32659.5469043892. The cubic root of 1066646004 is about 1021.7393123170.

The spelling of 1066646004 in words is "one billion, sixty-six million, six hundred forty-six thousand, four".