7804020745 has 8 divisors (see below), whose sum is σ = 9365358600. Its totient is φ = 6242860800.

The previous prime is 7804020733. The next prime is 7804020761. The reversal of 7804020745 is 5470204087.

It can be written as a sum of positive squares in 4 ways, for example, as 1902093769 + 5901926976 = 43613^2 + 76824^2 .

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

It is not a de Polignac number, because 7804020745 - 2⁵ = 7804020713 is a prime.

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, 87795 + ... + 152695.

It is an arithmetic number, because the mean of its divisors is an integer number (1170669825).

Almost surely, 2^7804020745 is an apocalyptic number.

It is an amenable number.

7804020745 is a deficient number, since it is larger than the sum of its proper divisors (1561337855).

7804020745 is a wasteful number, since it uses less digits than its factorization.

7804020745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88955.

The product of its (nonzero) digits is 62720, while the sum is 37.

The square root of 7804020745 is about 88340.3687166858. The cubic root of 7804020745 is about 1983.5331895833.

The spelling of 7804020745 in words is "seven billion, eight hundred four million, twenty thousand, seven hundred forty-five".