99980650 has 48 divisors (see below), whose sum is σ = 231860160. Its totient is φ = 31161600.

The previous prime is 99980597. The next prime is 99980653. The reversal of 99980650 is 5608999.

It is a happy number.

It is a super-2 number, since 2×99980650² = 19992260748845000, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 99980650.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99980653) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9135 + ... + 16834.

It is an arithmetic number, because the mean of its divisors is an integer number (4830420).

Almost surely, 2^99980650 is an apocalyptic number.

99980650 is an abundant number, since it is smaller than the sum of its proper divisors (131879510).

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

99980650 is a wasteful number, since it uses less digits than its factorization.

99980650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25999 (or 25994 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 46.

The square root of 99980650 is about 9999.0324531927. The cubic root of 99980650 is about 464.1289431821.

The spelling of 99980650 in words is "ninety-nine million, nine hundred eighty thousand, six hundred fifty".