98647609 has 4 divisors (see below), whose sum is σ = 99624420. Its totient is φ = 97670800.

The previous prime is 98647597. The next prime is 98647643. The reversal of 98647609 is 90674689.

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 66781584 + 31866025 = 8172^2 + 5645^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-98647609 is a prime.

It is a super-2 number, since 2×98647609² = 19462701522833762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (98647649) 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, 488254 + ... + 488455.

It is an arithmetic number, because the mean of its divisors is an integer number (24906105).

Almost surely, 2^98647609 is an apocalyptic number.

It is an amenable number.

98647609 is a deficient number, since it is larger than the sum of its proper divisors (976811).

98647609 is a wasteful number, since it uses less digits than its factorization.

98647609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 976810.

The product of its (nonzero) digits is 653184, while the sum is 49.

The square root of 98647609 is about 9932.1502707118. The cubic root of 98647609 is about 462.0569649842.

The spelling of 98647609 in words is "ninety-eight million, six hundred forty-seven thousand, six hundred nine".