2764664563 has 4 divisors (see below), whose sum is σ = 2832095448. Its totient is φ = 2697233680.

The previous prime is 2764664557. The next prime is 2764664603. The reversal of 2764664563 is 3654664672.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2764664563 - 2²¹ = 2762567411 is a prime.

It is a super-3 number, since 3×2764664563³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2764664533) 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, 33715381 + ... + 33715462.

It is an arithmetic number, because the mean of its divisors is an integer number (708023862).

Almost surely, 2^2764664563 is an apocalyptic number.

2764664563 is a deficient number, since it is larger than the sum of its proper divisors (67430885).

2764664563 is an equidigital number, since it uses as much as digits as its factorization.

2764664563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67430884.

The product of its digits is 4354560, while the sum is 49.

The square root of 2764664563 is about 52580.0776245148. The cubic root of 2764664563 is about 1403.5055961329.

The spelling of 2764664563 in words is "two billion, seven hundred sixty-four million, six hundred sixty-four thousand, five hundred sixty-three".