98664490 has 8 divisors (see below), whose sum is σ = 177596100. Its totient is φ = 39465792.

The previous prime is 98664487. The next prime is 98664493. The reversal of 98664490 is 9446689.

It is a Cunningham number, because it is equal to 9933²+1.

It is an interprime number because it is at equal distance from previous prime (98664487) and next prime (98664493).

It can be written as a sum of positive squares in 2 ways, for example, as 98664489 + 1 = 9933^2 + 1^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 98664490.

It is not an unprimeable number, because it can be changed into a prime (98664493) 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, 4933215 + ... + 4933234.

Almost surely, 2^98664490 is an apocalyptic number.

98664490 is a deficient number, since it is larger than the sum of its proper divisors (78931610).

98664490 is a wasteful number, since it uses less digits than its factorization.

98664490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9866456.

The product of its (nonzero) digits is 373248, while the sum is 46.

The square root of 98664490 is about 9933.0000503373. Note that the first 4 decimals coincide. The cubic root of 98664490 is about 462.0833198677.

The spelling of 98664490 in words is "ninety-eight million, six hundred sixty-four thousand, four hundred ninety".