98855640 has 160 divisors (see below), whose sum is σ = 357976080. Its totient is φ = 24323328.

The previous prime is 98855611. The next prime is 98855641. The reversal of 98855640 is 4655889.

98855640 is a `hidden beast` number, since 9 + 8 + 85 + 564 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98855641) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 40947 + ... + 43293.

Almost surely, 2^98855640 is an apocalyptic number.

98855640 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 98855640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178988040).

98855640 is an abundant number, since it is smaller than the sum of its proper divisors (259120440).

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

98855640 is a wasteful number, since it uses less digits than its factorization.

98855640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2383 (or 2370 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The square root of 98855640 is about 9942.6173616407. The cubic root of 98855640 is about 462.3815367404.

The spelling of 98855640 in words is "ninety-eight million, eight hundred fifty-five thousand, six hundred forty".