7098639 has 16 divisors (see below), whose sum is σ = 10090080. Its totient is φ = 4423680.

The previous prime is 7098629. The next prime is 7098653. The reversal of 7098639 is 9368907.

It is a happy number.

It is not a de Polignac number, because 7098639 - 2⁵ = 7098607 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7098639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7098629) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 8847 + ... + 9615.

It is an arithmetic number, because the mean of its divisors is an integer number (630630).

Almost surely, 2^7098639 is an apocalyptic number.

7098639 is a deficient number, since it is larger than the sum of its proper divisors (2991441).

7098639 is a wasteful number, since it uses less digits than its factorization.

7098639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 970.

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 7098639 is about 2664.3271195557. The cubic root of 7098639 is about 192.1874525613.

The spelling of 7098639 in words is "seven million, ninety-eight thousand, six hundred thirty-nine".