98643157 has 4 divisors (see below), whose sum is σ = 99352960. Its totient is φ = 97933356.

The previous prime is 98643143. The next prime is 98643169. The reversal of 98643157 is 75134689.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-98643157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98643137) 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, 354693 + ... + 354970.

It is an arithmetic number, because the mean of its divisors is an integer number (24838240).

Almost surely, 2^98643157 is an apocalyptic number.

It is an amenable number.

98643157 is a deficient number, since it is larger than the sum of its proper divisors (709803).

98643157 is a wasteful number, since it uses less digits than its factorization.

98643157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709802.

The product of its digits is 181440, while the sum is 43.

The square root of 98643157 is about 9931.9261475305. The cubic root of 98643157 is about 462.0500139505.

The spelling of 98643157 in words is "ninety-eight million, six hundred forty-three thousand, one hundred fifty-seven".