98643564 has 36 divisors (see below), whose sum is σ = 253076824. Its totient is φ = 32389632.

The previous prime is 98643557. The next prime is 98643577. The reversal of 98643564 is 46534689.

98643564 is a `hidden beast` number, since 9 + 86 + 4 + 3 + 564 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18037 + ... + 22860.

Almost surely, 2^98643564 is an apocalyptic number.

It is an amenable number.

98643564 is an abundant number, since it is smaller than the sum of its proper divisors (154433260).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

98643564 is a wasteful number, since it uses less digits than its factorization.

98643564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40974 (or 40969 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The square root of 98643564 is about 9931.9466369891. The cubic root of 98643564 is about 462.0506494198.

The spelling of 98643564 in words is "ninety-eight million, six hundred forty-three thousand, five hundred sixty-four".