1066451520 has 56 divisors (see below), whose sum is σ = 3385986624. Its totient is φ = 284386816.

The previous prime is 1066451501. The next prime is 1066451537. The reversal of 1066451520 is 251546601.

It is a super-2 number, since 2×1066451520² = 2274637689020620800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 554484 + ... + 556403.

Almost surely, 2^1066451520 is an apocalyptic number.

1066451520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1066451520 is an abundant number, since it is smaller than the sum of its proper divisors (2319535104).

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

1066451520 is a wasteful number, since it uses less digits than its factorization.

1066451520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1110907 (or 1110897 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 1066451520 is about 32656.5693237976. The cubic root of 1066451520 is about 1021.6772098556.

The spelling of 1066451520 in words is "one billion, sixty-six million, four hundred fifty-one thousand, five hundred twenty".