2564330506 has 4 divisors (see below), whose sum is σ = 3846495762. Its totient is φ = 1282165252.

The previous prime is 2564330491. The next prime is 2564330521. The reversal of 2564330506 is 6050334652.

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

It is an interprime number because it is at equal distance from previous prime (2564330491) and next prime (2564330521).

It can be written as a sum of positive squares in only one way, i.e., 2322372481 + 241958025 = 48191^2 + 15555^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 641082625 + ... + 641082628.

Almost surely, 2^2564330506 is an apocalyptic number.

2564330506 is a deficient number, since it is larger than the sum of its proper divisors (1282165256).

2564330506 is a wasteful number, since it uses less digits than its factorization.

2564330506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1282165255.

The product of its (nonzero) digits is 64800, while the sum is 34.

The square root of 2564330506 is about 50639.2190500604. The cubic root of 2564330506 is about 1368.7516833351.

The spelling of 2564330506 in words is "two billion, five hundred sixty-four million, three hundred thirty thousand, five hundred six".