1375660605 has 32 divisors (see below), whose sum is σ = 2410570368. Its totient is φ = 664371200.

The previous prime is 1375660597. The next prime is 1375660607. The reversal of 1375660605 is 5060665731.

It is not a de Polignac number, because 1375660605 - 2³ = 1375660597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1375660607) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26185 + ... + 58625.

It is an arithmetic number, because the mean of its divisors is an integer number (75330324).

Almost surely, 2^1375660605 is an apocalyptic number.

1375660605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1375660605 is a deficient number, since it is larger than the sum of its proper divisors (1034909763).

1375660605 is a wasteful number, since it uses less digits than its factorization.

1375660605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32717.

The product of its (nonzero) digits is 113400, while the sum is 39.

The square root of 1375660605 is about 37089.8989618467. The cubic root of 1375660605 is about 1112.1680982722.

The spelling of 1375660605 in words is "one billion, three hundred seventy-five million, six hundred sixty thousand, six hundred five".