98664421 has 16 divisors (see below), whose sum is σ = 103334400. Its totient is φ = 94140288.

The previous prime is 98664407. The next prime is 98664427. The reversal of 98664421 is 12446689.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-98664421 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98664427) by changing a digit.

It is an upside-down number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 430735 + ... + 430963.

It is an arithmetic number, because the mean of its divisors is an integer number (6458400).

Almost surely, 2^98664421 is an apocalyptic number.

It is an amenable number.

98664421 is a deficient number, since it is larger than the sum of its proper divisors (4669979).

98664421 is a wasteful number, since it uses less digits than its factorization.

98664421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468.

The product of its digits is 82944, while the sum is 40.

The square root of 98664421 is about 9932.9965770658. The cubic root of 98664421 is about 462.0832121499.

The spelling of 98664421 in words is "ninety-eight million, six hundred sixty-four thousand, four hundred twenty-one".