98921566 has 8 divisors (see below), whose sum is σ = 148509504. Its totient is φ = 49418400.

The previous prime is 98921549. The next prime is 98921567. The reversal of 98921566 is 66512989.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98921567) 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, 18190 + ... + 22993.

It is an arithmetic number, because the mean of its divisors is an integer number (18563688).

Almost surely, 2^98921566 is an apocalyptic number.

98921566 is a deficient number, since it is larger than the sum of its proper divisors (49587938).

98921566 is a wasteful number, since it uses less digits than its factorization.

98921566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42386.

The product of its digits is 233280, while the sum is 46.

The square root of 98921566 is about 9945.9321332895. The cubic root of 98921566 is about 462.4843000271.

The spelling of 98921566 in words is "ninety-eight million, nine hundred twenty-one thousand, five hundred sixty-six".