5665670158 has 4 divisors (see below), whose sum is σ = 8498505240. Its totient is φ = 2832835078.

The previous prime is 5665670137. The next prime is 5665670183. The reversal of 5665670158 is 8510765665.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1416417538 + ... + 1416417541.

It is an arithmetic number, because the mean of its divisors is an integer number (2124626310).

Almost surely, 2^5665670158 is an apocalyptic number.

5665670158 is a deficient number, since it is larger than the sum of its proper divisors (2832835082).

5665670158 is a wasteful number, since it uses less digits than its factorization.

5665670158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2832835081.

The product of its (nonzero) digits is 1512000, while the sum is 49.

The square root of 5665670158 is about 75270.6460580750. The cubic root of 5665670158 is about 1782.7225682491.

The spelling of 5665670158 in words is "five billion, six hundred sixty-five million, six hundred seventy thousand, one hundred fifty-eight".