1066451856 has 40 divisors (see below), whose sum is σ = 2874786240. Its totient is φ = 340027776.

The previous prime is 1066451843. The next prime is 1066451873. The reversal of 1066451856 is 6581546601.

It is a super-2 number, since 2×1066451856² = 2274639122331689472, which contains 22 as substring.

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, 481891 + ... + 484098.

It is an arithmetic number, because the mean of its divisors is an integer number (71869656).

Almost surely, 2^1066451856 is an apocalyptic number.

1066451856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1066451856 is an abundant number, since it is smaller than the sum of its proper divisors (1808334384).

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

1066451856 is a wasteful number, since it uses less digits than its factorization.

1066451856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 966023 (or 966017 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 42.

The square root of 1066451856 is about 32656.5744682445. The cubic root of 1066451856 is about 1021.6773171533.

The spelling of 1066451856 in words is "one billion, sixty-six million, four hundred fifty-one thousand, eight hundred fifty-six".