87639485 has 8 divisors (see below), whose sum is σ = 106950240. Its totient is φ = 68923024.

The previous prime is 87639481. The next prime is 87639521. The reversal of 87639485 is 58493678.

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 87639485 - 2² = 87639481 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87639481) 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, 148247 + ... + 148836.

It is an arithmetic number, because the mean of its divisors is an integer number (13368780).

Almost surely, 2^87639485 is an apocalyptic number.

It is an amenable number.

87639485 is a deficient number, since it is larger than the sum of its proper divisors (19310755).

87639485 is a wasteful number, since it uses less digits than its factorization.

87639485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297147.

The product of its digits is 1451520, while the sum is 50.

The square root of 87639485 is about 9361.5962848224. The cubic root of 87639485 is about 444.1877790388.

The spelling of 87639485 in words is "eighty-seven million, six hundred thirty-nine thousand, four hundred eighty-five".