2666250437 has 4 divisors (see below), whose sum is σ = 2823088716. Its totient is φ = 2509412160.

The previous prime is 2666250421. The next prime is 2666250439. The reversal of 2666250437 is 7340526662.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1992640321 + 673610116 = 44639^2 + 25954^2 .

It is not a de Polignac number, because 2666250437 - 2⁴ = 2666250421 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2666250394 and 2666250403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2666250439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78419114 + ... + 78419147.

It is an arithmetic number, because the mean of its divisors is an integer number (705772179).

Almost surely, 2^2666250437 is an apocalyptic number.

It is an amenable number.

2666250437 is a deficient number, since it is larger than the sum of its proper divisors (156838279).

2666250437 is a wasteful number, since it uses less digits than its factorization.

2666250437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156838278.

The product of its (nonzero) digits is 362880, while the sum is 41.

The square root of 2666250437 is about 51635.7476657403. The cubic root of 2666250437 is about 1386.6503955641.

The spelling of 2666250437 in words is "two billion, six hundred sixty-six million, two hundred fifty thousand, four hundred thirty-seven".