7907345 has 4 divisors (see below), whose sum is σ = 9488820. Its totient is φ = 6325872.

The previous prime is 7907323. The next prime is 7907351. The reversal of 7907345 is 5437097.

It is a Cunningham number, because it is equal to 2812²+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5437097 = 19 ⋅286163.

It can be written as a sum of positive squares in 2 ways, for example, as 2849344 + 5058001 = 1688^2 + 2249^2 .

It is a cyclic number.

It is not a de Polignac number, because 7907345 - 2²² = 3713041 is a prime.

It is a super-2 number, since 2×7907345² = 125052209898050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 790730 + ... + 790739.

It is an arithmetic number, because the mean of its divisors is an integer number (2372205).

Almost surely, 2^7907345 is an apocalyptic number.

It is an amenable number.

7907345 is a deficient number, since it is larger than the sum of its proper divisors (1581475).

7907345 is a wasteful number, since it uses less digits than its factorization.

7907345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1581474.

The product of its (nonzero) digits is 26460, while the sum is 35.

The square root of 7907345 is about 2812.0001778094. Note that the first 3 decimals coincide. The cubic root of 7907345 is about 199.2248747854.

The spelling of 7907345 in words is "seven million, nine hundred seven thousand, three hundred forty-five".