1066647132 has 36 divisors (see below), whose sum is σ = 2783225536. Its totient is φ = 344079360.

The previous prime is 1066647119. The next prime is 1066647157. The reversal of 1066647132 is 2317466601.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×1066647132² = 2275472208407650848, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 476773 + ... + 479004.

Almost surely, 2^1066647132 is an apocalyptic number.

1066647132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1066647132 is an abundant number, since it is smaller than the sum of its proper divisors (1716578404).

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

1066647132 is a wasteful number, since it uses less digits than its factorization.

1066647132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955818 (or 955813 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 1066647132 is about 32659.5641734546. The cubic root of 1066647132 is about 1021.7396724869.

The spelling of 1066647132 in words is "one billion, sixty-six million, six hundred forty-seven thousand, one hundred thirty-two".