87718970 has 8 divisors (see below), whose sum is σ = 157894164. Its totient is φ = 35087584.

The previous prime is 87718957. The next prime is 87718973. The reversal of 87718970 is 7981778.

It can be written as a sum of positive squares in 2 ways, for example, as 79727041 + 7991929 = 8929^2 + 2827^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (87718973) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4385939 + ... + 4385958.

Almost surely, 2^87718970 is an apocalyptic number.

87718970 is a deficient number, since it is larger than the sum of its proper divisors (70175194).

87718970 is a wasteful number, since it uses less digits than its factorization.

87718970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8771904.

The product of its (nonzero) digits is 197568, while the sum is 47.

The square root of 87718970 is about 9365.8405922800. The cubic root of 87718970 is about 444.3220244544.

It can be divided in two parts, 87718 and 970, that added together give a palindrome (88688).

The spelling of 87718970 in words is "eighty-seven million, seven hundred eighteen thousand, nine hundred seventy".