87706489 has 8 divisors (see below), whose sum is σ = 99424640. Its totient is φ = 76698576.

The previous prime is 87706483. The next prime is 87706517. The reversal of 87706489 is 98460778.

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

It is a cyclic number.

It is not a de Polignac number, because 87706489 - 2¹⁹ = 87182201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87706483) 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, 177297 + ... + 177790.

It is an arithmetic number, because the mean of its divisors is an integer number (12428080).

Almost surely, 2^87706489 is an apocalyptic number.

It is an amenable number.

87706489 is a deficient number, since it is larger than the sum of its proper divisors (11718151).

87706489 is a wasteful number, since it uses less digits than its factorization.

87706489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355119.

The product of its (nonzero) digits is 677376, while the sum is 49.

The square root of 87706489 is about 9365.1742642623. The cubic root of 87706489 is about 444.3009501599.

The spelling of 87706489 in words is "eighty-seven million, seven hundred six thousand, four hundred eighty-nine".