7800145 has 8 divisors (see below), whose sum is σ = 9377280. Its totient is φ = 6228720.

The previous prime is 7800139. The next prime is 7800179. The reversal of 7800145 is 5410087.

7800145 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 7800145 - 2³ = 7800137 is a prime.

7800145 is a lucky number.

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, 2640 + ... + 4750.

It is an arithmetic number, because the mean of its divisors is an integer number (1172160).

Almost surely, 2^7800145 is an apocalyptic number.

It is an amenable number.

7800145 is a deficient number, since it is larger than the sum of its proper divisors (1577135).

7800145 is a wasteful number, since it uses less digits than its factorization.

7800145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2855.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 7800145 is about 2792.8739677973. The cubic root of 7800145 is about 198.3204771618.

The spelling of 7800145 in words is "seven million, eight hundred thousand, one hundred forty-five".