99670020 has 48 divisors (see below), whose sum is σ = 279521088. Its totient is φ = 26536320.

The previous prime is 99670019. The next prime is 99670027. The reversal of 99670020 is 2007699.

It is a super-2 number, since 2×99670020² = 19868225773600800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (99670027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60447 + ... + 62073.

It is an arithmetic number, because the mean of its divisors is an integer number (5823356).

Almost surely, 2^99670020 is an apocalyptic number.

It is an amenable number.

99670020 is an abundant number, since it is smaller than the sum of its proper divisors (179851068).

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

99670020 is a wasteful number, since it uses less digits than its factorization.

99670020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2660 (or 2658 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 99670020 is about 9983.4873666470. The cubic root of 99670020 is about 463.6477769376.

The spelling of 99670020 in words is "ninety-nine million, six hundred seventy thousand, twenty".