130783666 has 16 divisors (see below), whose sum is σ = 211549464. Its totient is φ = 60280704.

The previous prime is 130783663. The next prime is 130783673. The reversal of 130783666 is 666387031.

It can be written as a sum of positive squares in 4 ways, for example, as 87815641 + 42968025 = 9371^2 + 6555^2 .

It is not an unprimeable number, because it can be changed into a prime (130783663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19230 + ... + 25126.

Almost surely, 2^130783666 is an apocalyptic number.

130783666 is a deficient number, since it is larger than the sum of its proper divisors (80765798).

130783666 is a wasteful number, since it uses less digits than its factorization.

130783666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6765.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 130783666 is about 11436.0686426761. The cubic root of 130783666 is about 507.5955845748.

The spelling of 130783666 in words is "one hundred thirty million, seven hundred eighty-three thousand, six hundred sixty-six".