2606400245 has 4 divisors (see below), whose sum is σ = 3127680300. Its totient is φ = 2085120192.

The previous prime is 2606400241. The next prime is 2606400263. The reversal of 2606400245 is 5420046062.

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 841812196 + 1764588049 = 29014^2 + 42007^2 .

It is a cyclic number.

It is not a de Polignac number, because 2606400245 - 2² = 2606400241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2606400241) 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, 260640020 + ... + 260640029.

It is an arithmetic number, because the mean of its divisors is an integer number (781920075).

Almost surely, 2^2606400245 is an apocalyptic number.

It is an amenable number.

2606400245 is a deficient number, since it is larger than the sum of its proper divisors (521280055).

2606400245 is an equidigital number, since it uses as much as digits as its factorization.

2606400245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521280054.

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 2606400245 is about 51052.9161263096. The cubic root of 2606400245 is about 1376.1962473400.

The spelling of 2606400245 in words is "two billion, six hundred six million, four hundred thousand, two hundred forty-five".