99755730 has 24 divisors (see below), whose sum is σ = 259365132. Its totient is φ = 26601504.

The previous prime is 99755729. The next prime is 99755731. The reversal of 99755730 is 3755799.

It is a happy number.

99755730 is a `hidden beast` number, since 9 + 9 + 75 + 573 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (99755729) and next prime (99755731).

It can be written as a sum of positive squares in 2 ways, for example, as 83667609 + 16088121 = 9147^2 + 4011^2 .

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

It is not an unprimeable number, because it can be changed into a prime (99755731) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 554109 + ... + 554288.

Almost surely, 2^99755730 is an apocalyptic number.

99755730 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

99755730 is an abundant number, since it is smaller than the sum of its proper divisors (159609402).

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

99755730 is a wasteful number, since it uses less digits than its factorization.

99755730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1108410 (or 1108407 counting only the distinct ones).

The product of its (nonzero) digits is 297675, while the sum is 45.

The square root of 99755730 is about 9987.7790323975. The cubic root of 99755730 is about 463.7806415820.

The spelling of 99755730 in words is "ninety-nine million, seven hundred fifty-five thousand, seven hundred thirty".