98721237 has 8 divisors (see below), whose sum is σ = 132311104. Its totient is φ = 65472768.

The previous prime is 98721211. The next prime is 98721253. The reversal of 98721237 is 73212789.

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

It is not a de Polignac number, because 98721237 - 2⁷ = 98721109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 98721195 and 98721204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98722237) 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, 84673 + ... + 85830.

It is an arithmetic number, because the mean of its divisors is an integer number (16538888).

Almost surely, 2^98721237 is an apocalyptic number.

It is an amenable number.

98721237 is a deficient number, since it is larger than the sum of its proper divisors (33589867).

98721237 is a wasteful number, since it uses less digits than its factorization.

98721237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170699.

The product of its digits is 42336, while the sum is 39.

The square root of 98721237 is about 9935.8561281854. The cubic root of 98721237 is about 462.1718921480.

The spelling of 98721237 in words is "ninety-eight million, seven hundred twenty-one thousand, two hundred thirty-seven".