7706945 has 4 divisors (see below), whose sum is σ = 9248340. Its totient is φ = 6165552.

The previous prime is 7706929. The next prime is 7707023. The reversal of 7706945 is 5496077.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5496077 = 67 ⋅82031.

It can be written as a sum of positive squares in 2 ways, for example, as 1985281 + 5721664 = 1409^2 + 2392^2 .

It is a cyclic number.

It is not a de Polignac number, because 7706945 - 2⁴ = 7706929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7706899 and 7706908.

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 3 ways as a sum of consecutive naturals, for example, 770690 + ... + 770699.

It is an arithmetic number, because the mean of its divisors is an integer number (2312085).

Almost surely, 2^7706945 is an apocalyptic number.

It is an amenable number.

7706945 is a deficient number, since it is larger than the sum of its proper divisors (1541395).

7706945 is a wasteful number, since it uses less digits than its factorization.

7706945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1541394.

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 7706945 is about 2776.1385051903. The cubic root of 7706945 is about 197.5274330317.

The spelling of 7706945 in words is "seven million, seven hundred six thousand, nine hundred forty-five".