1347065661 has 16 divisors (see below), whose sum is σ = 1857128960. Its totient is φ = 867620160.

The previous prime is 1347065653. The next prime is 1347065717. The reversal of 1347065661 is 1665607431.

It is not a de Polignac number, because 1347065661 - 2³ = 1347065653 is a prime.

It is a super-3 number, since 3×1347065661³ (a number of 28 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1347065611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45195 + ... + 68823.

It is an arithmetic number, because the mean of its divisors is an integer number (116070560).

Almost surely, 2^1347065661 is an apocalyptic number.

It is an amenable number.

1347065661 is a deficient number, since it is larger than the sum of its proper divisors (510063299).

1347065661 is a wasteful number, since it uses less digits than its factorization.

1347065661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24276.

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 1347065661 is about 36702.3931236098. The cubic root of 1347065661 is about 1104.4081133649.

The spelling of 1347065661 in words is "one billion, three hundred forty-seven million, sixty-five thousand, six hundred sixty-one".