2556668074 has 8 divisors (see below), whose sum is σ = 3845284740. Its totient is φ = 1274906496.

The previous prime is 2556668057. The next prime is 2556668087. The reversal of 2556668074 is 4708666552.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2320830625 + 235837449 = 48175^2 + 15357^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×2556668074² = 13073103281221738952, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1712839 + ... + 1714330.

Almost surely, 2^2556668074 is an apocalyptic number.

2556668074 is a deficient number, since it is larger than the sum of its proper divisors (1288616666).

2556668074 is a wasteful number, since it uses less digits than its factorization.

2556668074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3427544.

The product of its (nonzero) digits is 2419200, while the sum is 49.

The square root of 2556668074 is about 50563.5053571249. The cubic root of 2556668074 is about 1367.3870087018.

The spelling of 2556668074 in words is "two billion, five hundred fifty-six million, six hundred sixty-eight thousand, seventy-four".