2560321634 has 16 divisors (see below), whose sum is σ = 4247686968. Its totient is φ = 1149748992.

The previous prime is 2560321633. The next prime is 2560321691. The reversal of 2560321634 is 4361230652.

It can be written as a sum of positive squares in 4 ways, for example, as 2560056409 + 265225 = 50597^2 + 515^2 .

It is a super-5 number, since 5×2560321634⁵ (a number of 48 digits) contains 55555 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2560321634.

It is not an unprimeable number, because it can be changed into a prime (2560321633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1329767 + ... + 1331690.

Almost surely, 2^2560321634 is an apocalyptic number.

2560321634 is a deficient number, since it is larger than the sum of its proper divisors (1687365334).

2560321634 is a wasteful number, since it uses less digits than its factorization.

2560321634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2661509.

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 2560321634 is about 50599.6208879078. The cubic root of 2560321634 is about 1368.0380451926.

The spelling of 2560321634 in words is "two billion, five hundred sixty million, three hundred twenty-one thousand, six hundred thirty-four".