87890650 has 12 divisors (see below), whose sum is σ = 163476702. Its totient is φ = 35156240.

The previous prime is 87890623. The next prime is 87890657. The reversal of 87890650 is 5609878.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 31685641 + 56205009 = 5629^2 + 7497^2 .

It is a junction number, because it is equal to n+sod(n) for n = 87890597 and 87890606.

It is not an unprimeable number, because it can be changed into a prime (87890657) 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, 878857 + ... + 878956.

Almost surely, 2^87890650 is an apocalyptic number.

87890650 is a deficient number, since it is larger than the sum of its proper divisors (75586052).

87890650 is a wasteful number, since it uses less digits than its factorization.

87890650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1757825 (or 1757820 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 43.

The square root of 87890650 is about 9375.0013333332. The cubic root of 87890650 is about 444.6117052170.

The spelling of 87890650 in words is "eighty-seven million, eight hundred ninety thousand, six hundred fifty".