87786845 has 8 divisors (see below), whose sum is σ = 106174464. Its totient is φ = 69675984.

The previous prime is 87786833. The next prime is 87786871. The reversal of 87786845 is 54868778.

It is a happy number.

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 87786845 - 2¹⁰ = 87785821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68489 + ... + 69758.

It is an arithmetic number, because the mean of its divisors is an integer number (13271808).

Almost surely, 2^87786845 is an apocalyptic number.

It is an amenable number.

87786845 is a deficient number, since it is larger than the sum of its proper divisors (18387619).

87786845 is a wasteful number, since it uses less digits than its factorization.

87786845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138379.

The product of its digits is 3010560, while the sum is 53.

The square root of 87786845 is about 9369.4634318087. The cubic root of 87786845 is about 444.4365970952.

The spelling of 87786845 in words is "eighty-seven million, seven hundred eighty-six thousand, eight hundred forty-five".