7906945 has 8 divisors (see below), whose sum is σ = 9987840. Its totient is φ = 5992560.

The previous prime is 7906939. The next prime is 7906957. The reversal of 7906945 is 5496097.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7906945 - 2⁷ = 7906817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7906898 and 7906907.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41521 + ... + 41710.

It is an arithmetic number, because the mean of its divisors is an integer number (1248480).

Almost surely, 2^7906945 is an apocalyptic number.

It is an amenable number.

7906945 is a deficient number, since it is larger than the sum of its proper divisors (2080895).

7906945 is a wasteful number, since it uses less digits than its factorization.

7906945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83255.

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 7906945 is about 2811.9290531591. The cubic root of 7906945 is about 199.2215154070.

The spelling of 7906945 in words is "seven million, nine hundred six thousand, nine hundred forty-five".