8742666730 has 72 divisors (see below), whose sum is σ = 18815647788. Its totient is φ = 2916248832.

The previous prime is 8742666719. The next prime is 8742666731. The reversal of 8742666730 is 376662478.

It can be written as a sum of positive squares in 6 ways, for example, as 7778005249 + 964661481 = 88193^2 + 31059^2 .

It is a Harshad number since it is a multiple of its sum of digits (49).

It is not an unprimeable number, because it can be changed into a prime (8742666731) 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 35 ways as a sum of consecutive naturals, for example, 664294 + ... + 677326.

Almost surely, 2^8742666730 is an apocalyptic number.

8742666730 is an abundant number, since it is smaller than the sum of its proper divisors (10072981058).

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

8742666730 is a wasteful number, since it uses less digits than its factorization.

8742666730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13128 (or 13084 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 49.

The square root of 8742666730 is about 93502.2284761171. The cubic root of 8742666730 is about 2060.0668223839.

The spelling of 8742666730 in words is "eight billion, seven hundred forty-two million, six hundred sixty-six thousand, seven hundred thirty".