7904545 has 8 divisors (see below), whose sum is σ = 10347840. Its totient is φ = 5748720.

The previous prime is 7904531. The next prime is 7904557. The reversal of 7904545 is 5454097.

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

It is not a de Polignac number, because 7904545 - 2⁷ = 7904417 is a prime.

7904545 is a modest number, since divided by 4545 gives 790 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 7904545.

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 7 ways as a sum of consecutive naturals, for example, 71805 + ... + 71914.

It is an arithmetic number, because the mean of its divisors is an integer number (1293480).

Almost surely, 2^7904545 is an apocalyptic number.

It is an amenable number.

7904545 is a deficient number, since it is larger than the sum of its proper divisors (2443295).

7904545 is a wasteful number, since it uses less digits than its factorization.

7904545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143735.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 7904545 is about 2811.5022674720. The cubic root of 7904545 is about 199.2013567565.

It can be divided in two parts, 790 and 4545, that added together give a palindrome (5335).

The spelling of 7904545 in words is "seven million, nine hundred four thousand, five hundred forty-five".