99975650 has 12 divisors (see below), whose sum is σ = 185954802. Its totient is φ = 39990240.

The previous prime is 99975647. The next prime is 99975653. The reversal of 99975650 is 5657999.

It is an interprime number because it is at equal distance from previous prime (99975647) and next prime (99975653).

It can be written as a sum of positive squares in 3 ways, for example, as 38651089 + 61324561 = 6217^2 + 7831^2 .

It is a Harshad number since it is a multiple of its sum of digits (50), and also a Moran number because the ratio is a prime number: 1999513 = 99975650 / (9 + 9 + 9 + 7 + 5 + 6 + 5 + 0).

It is not an unprimeable number, because it can be changed into a prime (99975653) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 999707 + ... + 999806.

Almost surely, 2^99975650 is an apocalyptic number.

99975650 is a deficient number, since it is larger than the sum of its proper divisors (85979152).

99975650 is a wasteful number, since it uses less digits than its factorization.

99975650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1999525 (or 1999520 counting only the distinct ones).

The product of its (nonzero) digits is 765450, while the sum is 50.

The square root of 99975650 is about 9998.7824258757. The cubic root of 99975650 is about 464.1212060736.

The spelling of 99975650 in words is "ninety-nine million, nine hundred seventy-five thousand, six hundred fifty".