7900245 has 18 divisors (see below), whose sum is σ = 13726518. Its totient is φ = 4203408.

The previous prime is 7900231. The next prime is 7900253. The reversal of 7900245 is 5420097.

7900245 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 6320196 + 1580049 = 2514^2 + 1257^2 .

It is not a de Polignac number, because 7900245 - 2⁴ = 7900229 is a prime.

It is a congruent number.

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 17 ways as a sum of consecutive naturals, for example, 18646 + ... + 19064.

Almost surely, 2^7900245 is an apocalyptic number.

It is an amenable number.

7900245 is a deficient number, since it is larger than the sum of its proper divisors (5826273).

7900245 is an equidigital number, since it uses as much as digits as its factorization.

7900245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 849 (or 427 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 7900245 is about 2810.7374477172. The cubic root of 7900245 is about 199.1652289675.

The spelling of 7900245 in words is "seven million, nine hundred thousand, two hundred forty-five".