7198985 has 8 divisors (see below), whose sum is σ = 8849736. Its totient is φ = 5618560.

The previous prime is 7198969. The next prime is 7198987. The reversal of 7198985 is 5898917.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 808201 + 6390784 = 899^2 + 2528^2 .

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

It is not a de Polignac number, because 7198985 - 2⁴ = 7198969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7198987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17354 + ... + 17763.

It is an arithmetic number, because the mean of its divisors is an integer number (1106217).

Almost surely, 2^7198985 is an apocalyptic number.

It is an amenable number.

7198985 is a deficient number, since it is larger than the sum of its proper divisors (1650751).

7198985 is a wasteful number, since it uses less digits than its factorization.

7198985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35163.

The product of its digits is 181440, while the sum is 47.

The square root of 7198985 is about 2683.0924322505. The cubic root of 7198985 is about 193.0888026824.

It can be divided in two parts, 719 and 8985, that multiplied together give a triangular number (6460215 = T₃₅₉₄).

The spelling of 7198985 in words is "seven million, one hundred ninety-eight thousand, nine hundred eighty-five".