1350557666 has 8 divisors (see below), whose sum is σ = 2095693020. Its totient is φ = 651993328.

The previous prime is 1350557647. The next prime is 1350557699. The reversal of 1350557666 is 6667550531.

It can be written as a sum of positive squares in 2 ways, for example, as 1339194025 + 11363641 = 36595^2 + 3371^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11642681 + ... + 11642796.

Almost surely, 2^1350557666 is an apocalyptic number.

1350557666 is a deficient number, since it is larger than the sum of its proper divisors (745135354).

1350557666 is a wasteful number, since it uses less digits than its factorization.

1350557666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23285508.

The product of its (nonzero) digits is 567000, while the sum is 44.

The square root of 1350557666 is about 36749.9342312337. The cubic root of 1350557666 is about 1105.3616107984.

The spelling of 1350557666 in words is "one billion, three hundred fifty million, five hundred fifty-seven thousand, six hundred sixty-six".