7898045 has 4 divisors (see below), whose sum is σ = 9477660. Its totient is φ = 6318432.

The previous prime is 7898029. The next prime is 7898069. The reversal of 7898045 is 5408987.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5373124 + 2524921 = 2318^2 + 1589^2 .

It is a cyclic number.

It is not a de Polignac number, because 7898045 - 2⁴ = 7898029 is a prime.

It is a super-2 number, since 2×7898045² = 124758229644050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7897993 and 7898011.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 789800 + ... + 789809.

It is an arithmetic number, because the mean of its divisors is an integer number (2369415).

Almost surely, 2^7898045 is an apocalyptic number.

It is an amenable number.

7898045 is a deficient number, since it is larger than the sum of its proper divisors (1579615).

7898045 is a wasteful number, since it uses less digits than its factorization.

7898045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1579614.

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 7898045 is about 2810.3460640996. The cubic root of 7898045 is about 199.1467399129.

The spelling of 7898045 in words is "seven million, eight hundred ninety-eight thousand, forty-five".