99999650 has 12 divisors (see below), whose sum is σ = 185999442. Its totient is φ = 39999840.

The previous prime is 99999643. The next prime is 99999677. The reversal of 99999650 is 5699999.

It can be written as a sum of positive squares in 3 ways, for example, as 49603849 + 50395801 = 7043^2 + 7099^2 .

It is a hoax number, since the sum of its digits (56) coincides with the sum of the digits of its distinct prime factors.

It is a nialpdrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 999947 + ... + 1000046.

Almost surely, 2^99999650 is an apocalyptic number.

99999650 is a deficient number, since it is larger than the sum of its proper divisors (85999792).

99999650 is a wasteful number, since it uses less digits than its factorization.

99999650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2000005 (or 2000000 counting only the distinct ones).

The product of its (nonzero) digits is 1771470, while the sum is 56.

The square root of 99999650 is about 9999.9824999847. The cubic root of 99999650 is about 464.1583418419.

The spelling of 99999650 in words is "ninety-nine million, nine hundred ninety-nine thousand, six hundred fifty".