98436721 has 8 divisors (see below), whose sum is σ = 101102400. Its totient is φ = 95804400.

The previous prime is 98436719. The next prime is 98436731. The reversal of 98436721 is 12763489.

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

It is a cyclic number.

It is not a de Polignac number, because 98436721 - 2¹ = 98436719 is a prime.

It is not an unprimeable number, because it can be changed into a prime (98436731) 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, 2301 + ... + 14218.

It is an arithmetic number, because the mean of its divisors is an integer number (12637800).

Almost surely, 2^98436721 is an apocalyptic number.

It is an amenable number.

98436721 is a deficient number, since it is larger than the sum of its proper divisors (2665679).

98436721 is a wasteful number, since it uses less digits than its factorization.

98436721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16679.

The product of its digits is 72576, while the sum is 40.

The square root of 98436721 is about 9921.5281585046. The cubic root of 98436721 is about 461.7274696222.

The spelling of 98436721 in words is "ninety-eight million, four hundred thirty-six thousand, seven hundred twenty-one".