2654664505 has 4 divisors (see below), whose sum is σ = 3185597412. Its totient is φ = 2123731600.

The previous prime is 2654664503. The next prime is 2654664517. The reversal of 2654664505 is 5054664562.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 747420921 + 1907243584 = 27339^2 + 43672^2 .

It is not a de Polignac number, because 2654664505 - 2¹ = 2654664503 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2654664503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 265466446 + ... + 265466455.

It is an arithmetic number, because the mean of its divisors is an integer number (796399353).

Almost surely, 2^2654664505 is an apocalyptic number.

It is an amenable number.

2654664505 is a deficient number, since it is larger than the sum of its proper divisors (530932907).

2654664505 is an equidigital number, since it uses as much as digits as its factorization.

2654664505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530932906.

The product of its (nonzero) digits is 864000, while the sum is 43.

The square root of 2654664505 is about 51523.4364634192. The cubic root of 2654664505 is about 1384.6389610963.

The spelling of 2654664505 in words is "two billion, six hundred fifty-four million, six hundred sixty-four thousand, five hundred five".