99980345 has 8 divisors (see below), whose sum is σ = 122902920. Its totient is φ = 78033280.

The previous prime is 99980329. The next prime is 99980347. The reversal of 99980345 is 54308999.

It can be written as a sum of positive squares in 4 ways, for example, as 2128681 + 97851664 = 1459^2 + 9892^2 .

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

It is not a de Polignac number, because 99980345 - 2⁴ = 99980329 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 99980345.

It is not an unprimeable number, because it can be changed into a prime (99980347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243650 + ... + 244059.

It is an arithmetic number, because the mean of its divisors is an integer number (15362865).

Almost surely, 2^99980345 is an apocalyptic number.

It is an amenable number.

99980345 is a deficient number, since it is larger than the sum of its proper divisors (22922575).

99980345 is a wasteful number, since it uses less digits than its factorization.

99980345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487755.

The product of its (nonzero) digits is 349920, while the sum is 47.

The square root of 99980345 is about 9999.0172017054. The cubic root of 99980345 is about 464.1284712258.

The spelling of 99980345 in words is "ninety-nine million, nine hundred eighty thousand, three hundred forty-five".