3506356665 has 48 divisors (see below), whose sum is σ = 7007465088. Its totient is φ = 1588704768.

The previous prime is 3506356639. The next prime is 3506356727. The reversal of 3506356665 is 5666536053.

It is not a de Polignac number, because 3506356665 - 2²⁰ = 3505308089 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 3506356665.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13659 + ... + 84848.

It is an arithmetic number, because the mean of its divisors is an integer number (145988856).

Almost surely, 2^3506356665 is an apocalyptic number.

3506356665 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3506356665 is a deficient number, since it is larger than the sum of its proper divisors (3501108423).

3506356665 is a wasteful number, since it uses less digits than its factorization.

3506356665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98638 (or 98635 counting only the distinct ones).

The product of its (nonzero) digits is 1458000, while the sum is 45.

The square root of 3506356665 is about 59214.4970847511. The cubic root of 3506356665 is about 1519.2131004567.

The spelling of 3506356665 in words is "three billion, five hundred six million, three hundred fifty-six thousand, six hundred sixty-five".