7798945 has 32 divisors (see below), whose sum is σ = 11943936. Its totient is φ = 4747200.

The previous prime is 7798939. The next prime is 7798951. The reversal of 7798945 is 5498977.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (7798939) and next prime (7798951).

It is not a de Polignac number, because 7798945 - 2¹⁷ = 7667873 is a prime.

It is a super-2 number, since 2×7798945² = 121647086226050, which contains 22 as substring.

It is a Duffinian number.

7798945 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17880 + ... + 18310.

It is an arithmetic number, because the mean of its divisors is an integer number (373248).

Almost surely, 2^7798945 is an apocalyptic number.

It is an amenable number.

7798945 is a deficient number, since it is larger than the sum of its proper divisors (4144991).

7798945 is a wasteful number, since it uses less digits than its factorization.

7798945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501.

The product of its digits is 635040, while the sum is 49.

The square root of 7798945 is about 2792.6591270687. The cubic root of 7798945 is about 198.3103065484.

Subtracting from 7798945 its reverse (5498977), we obtain a cube (2299968 = 132³).

The spelling of 7798945 in words is "seven million, seven hundred ninety-eight thousand, nine hundred forty-five".