7898755 has 4 divisors (see below), whose sum is σ = 9478512. Its totient is φ = 6319000.

The previous prime is 7898753. The next prime is 7898767. The reversal of 7898755 is 5578987.

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

It is not a de Polignac number, because 7898755 - 2¹ = 7898753 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7898699 and 7898708.

It is not an unprimeable number, because it can be changed into a prime (7898753) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 789871 + ... + 789880.

It is an arithmetic number, because the mean of its divisors is an integer number (2369628).

Almost surely, 2^7898755 is an apocalyptic number.

7898755 is a deficient number, since it is larger than the sum of its proper divisors (1579757).

7898755 is a wasteful number, since it uses less digits than its factorization.

7898755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1579756.

The product of its digits is 705600, while the sum is 49.

The square root of 7898755 is about 2810.4723802237. The cubic root of 7898755 is about 199.1527072103.

The spelling of 7898755 in words is "seven million, eight hundred ninety-eight thousand, seven hundred fifty-five".