2662655641 has 4 divisors (see below), whose sum is σ = 2663232784. Its totient is φ = 2662078500.

The previous prime is 2662655623. The next prime is 2662655657. The reversal of 2662655641 is 1465562662.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2662655641 - 2⁹ = 2662655129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2662655341) 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, 281595 + ... + 290896.

It is an arithmetic number, because the mean of its divisors is an integer number (665808196).

Almost surely, 2^2662655641 is an apocalyptic number.

It is an amenable number.

2662655641 is a deficient number, since it is larger than the sum of its proper divisors (577143).

2662655641 is an equidigital number, since it uses as much as digits as its factorization.

2662655641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577142.

The product of its digits is 518400, while the sum is 43.

The square root of 2662655641 is about 51600.9267455537. The cubic root of 2662655641 is about 1386.0269273483.

The spelling of 2662655641 in words is "two billion, six hundred sixty-two million, six hundred fifty-five thousand, six hundred forty-one".