5290447665 has 16 divisors (see below), whose sum is σ = 8499845376. Its totient is φ = 2809862400.

The previous prime is 5290447663. The next prime is 5290447691. The reversal of 5290447665 is 5667440925.

It is not a de Polignac number, because 5290447665 - 2¹ = 5290447663 is a prime.

It is a super-2 number, since 2×5290447665² = 55977672992207904450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5290447661) 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, 728121 + ... + 735350.

It is an arithmetic number, because the mean of its divisors is an integer number (531240336).

Almost surely, 2^5290447665 is an apocalyptic number.

It is an amenable number.

5290447665 is a deficient number, since it is larger than the sum of its proper divisors (3209397711).

5290447665 is a wasteful number, since it uses less digits than its factorization.

5290447665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1463720.

The product of its (nonzero) digits is 1814400, while the sum is 48.

The square root of 5290447665 is about 72735.4635992650. The cubic root of 5290447665 is about 1742.4653107109.

The spelling of 5290447665 in words is "five billion, two hundred ninety million, four hundred forty-seven thousand, six hundred sixty-five".