7690145 has 4 divisors (see below), whose sum is σ = 9228180. Its totient is φ = 6152112.

The previous prime is 7690129. The next prime is 7690157. The reversal of 7690145 is 5410967.

It is a happy number.

7690145 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5410967 = 167 ⋅32401.

It can be written as a sum of positive squares in 2 ways, for example, as 2289169 + 5400976 = 1513^2 + 2324^2 .

It is a cyclic number.

It is not a de Polignac number, because 7690145 - 2⁴ = 7690129 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 769010 + ... + 769019.

It is an arithmetic number, because the mean of its divisors is an integer number (2307045).

Almost surely, 2^7690145 is an apocalyptic number.

It is an amenable number.

7690145 is a deficient number, since it is larger than the sum of its proper divisors (1538035).

7690145 is a wasteful number, since it uses less digits than its factorization.

7690145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1538034.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 7690145 is about 2773.1110688178. Note that the first 3 decimals coincide. The cubic root of 7690145 is about 197.3838017550.

The spelling of 7690145 in words is "seven million, six hundred ninety thousand, one hundred forty-five".