87688970 has 16 divisors (see below), whose sum is σ = 159469128. Its totient is φ = 34713600.

The previous prime is 87688969. The next prime is 87689003. The reversal of 87688970 is 7988678.

It can be written as a sum of positive squares in 4 ways, for example, as 57866449 + 29822521 = 7607^2 + 5461^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44231 + ... + 46170.

Almost surely, 2^87688970 is an apocalyptic number.

87688970 is a deficient number, since it is larger than the sum of its proper divisors (71780158).

87688970 is a wasteful number, since it uses less digits than its factorization.

87688970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90505.

The product of its (nonzero) digits is 1354752, while the sum is 53.

The square root of 87688970 is about 9364.2388905880. The cubic root of 87688970 is about 444.2713657785.

The spelling of 87688970 in words is "eighty-seven million, six hundred eighty-eight thousand, nine hundred seventy".