97818730 has 8 divisors (see below), whose sum is σ = 176073732. Its totient is φ = 39127488.

The previous prime is 97818709. The next prime is 97818739. The reversal of 97818730 is 3781879.

It can be written as a sum of positive squares in 2 ways, for example, as 97357689 + 461041 = 9867^2 + 679^2 .

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

It is not an unprimeable number, because it can be changed into a prime (97818739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4890927 + ... + 4890946.

Almost surely, 2^97818730 is an apocalyptic number.

97818730 is a deficient number, since it is larger than the sum of its proper divisors (78255002).

97818730 is a wasteful number, since it uses less digits than its factorization.

97818730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9781880.

The product of its (nonzero) digits is 84672, while the sum is 43.

The square root of 97818730 is about 9890.3351813778. The cubic root of 97818730 is about 460.7591905661.

The spelling of 97818730 in words is "ninety-seven million, eight hundred eighteen thousand, seven hundred thirty".