2559689740 has 24 divisors (see below), whose sum is σ = 5385930480. Its totient is φ = 1021860288.

The previous prime is 2559689723. The next prime is 2559689773. The reversal of 2559689740 is 479869552.

It is a super-2 number, since 2×2559689740² = 13104023130122535200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115542 + ... + 135901.

It is an arithmetic number, because the mean of its divisors is an integer number (224413770).

Almost surely, 2^2559689740 is an apocalyptic number.

2559689740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2559689740 is an abundant number, since it is smaller than the sum of its proper divisors (2826240740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2559689740 is a wasteful number, since it uses less digits than its factorization.

2559689740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251961 (or 251959 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 55.

The square root of 2559689740 is about 50593.3764439576. The cubic root of 2559689740 is about 1367.9254908235.

The spelling of 2559689740 in words is "two billion, five hundred fifty-nine million, six hundred eighty-nine thousand, seven hundred forty".