87669930 has 16 divisors (see below), whose sum is σ = 210407904. Its totient is φ = 23378640.

The previous prime is 87669917. The next prime is 87669937. The reversal of 87669930 is 3996678.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 87669930.

It is not an unprimeable number, because it can be changed into a prime (87669937) 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, 1461136 + ... + 1461195.

It is an arithmetic number, because the mean of its divisors is an integer number (13150494).

Almost surely, 2^87669930 is an apocalyptic number.

87669930 is an abundant number, since it is smaller than the sum of its proper divisors (122737974).

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

87669930 is a wasteful number, since it uses less digits than its factorization.

87669930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2922341.

The product of its (nonzero) digits is 489888, while the sum is 48.

The square root of 87669930 is about 9363.2222017850. Note that the first 4 decimals coincide. The cubic root of 87669930 is about 444.2392084118.

The spelling of 87669930 in words is "eighty-seven million, six hundred sixty-nine thousand, nine hundred thirty".