7904745 has 24 divisors (see below), whose sum is σ = 14508936. Its totient is φ = 3967488.

The previous prime is 7904731. The next prime is 7904753. The reversal of 7904745 is 5474097.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2471184 + 5433561 = 1572^2 + 2331^2 .

It is not a de Polignac number, because 7904745 - 2¹⁵ = 7871977 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4402 + ... + 5931.

It is an arithmetic number, because the mean of its divisors is an integer number (604539).

Almost surely, 2^7904745 is an apocalyptic number.

It is an amenable number.

7904745 is a deficient number, since it is larger than the sum of its proper divisors (6604191).

7904745 is a wasteful number, since it uses less digits than its factorization.

7904745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10361 (or 10358 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 7904745 is about 2811.5378354203. The cubic root of 7904745 is about 199.2030367999.

It can be divided in two parts, 7904 and 745, that added together give a square (8649 = 93²).

The spelling of 7904745 in words is "seven million, nine hundred four thousand, seven hundred forty-five".