9636258240 has 672 divisors, whose sum is σ = 41447337984. Its totient is φ = 2003927040.

The previous prime is 9636258221. The next prime is 9636258263. The reversal of 9636258240 is 428526369.

9636258240 is a `hidden beast` number, since 9 + 6 + 3 + 62 + 582 + 4 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (672).

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 10623867 + ... + 10624773.

Almost surely, 2^9636258240 is an apocalyptic number.

9636258240 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 9636258240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20723668992).

9636258240 is an abundant number, since it is smaller than the sum of its proper divisors (31811079744).

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

9636258240 is a wasteful number, since it uses less digits than its factorization.

9636258240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 985 (or 972 counting only the distinct ones).

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

The square root of 9636258240 is about 98164.4448871382. Note that the first 3 decimals coincide. The cubic root of 9636258240 is about 2127.9894802276.

The spelling of 9636258240 in words is "nine billion, six hundred thirty-six million, two hundred fifty-eight thousand, two hundred forty".