3155420665 has 8 divisors (see below), whose sum is σ = 3786985800. Its totient is φ = 2524015872.

The previous prime is 3155420663. The next prime is 3155420707. The reversal of 3155420665 is 5660245513.

It can be written as a sum of positive squares in 4 ways, for example, as 102637161 + 3052783504 = 10131^2 + 55252^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 3155420665 - 2¹ = 3155420663 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3155420663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8587 + ... + 79903.

It is an arithmetic number, because the mean of its divisors is an integer number (473373225).

Almost surely, 2^3155420665 is an apocalyptic number.

It is an amenable number.

3155420665 is a deficient number, since it is larger than the sum of its proper divisors (631565135).

3155420665 is an equidigital number, since it uses as much as digits as its factorization.

3155420665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80171.

The product of its (nonzero) digits is 108000, while the sum is 37.

The square root of 3155420665 is about 56173.1311660655. The cubic root of 3155420665 is about 1466.7375881396.

The spelling of 3155420665 in words is "three billion, one hundred fifty-five million, four hundred twenty thousand, six hundred sixty-five".