87776305 has 8 divisors (see below), whose sum is σ = 105867432. Its totient is φ = 69863808.

The previous prime is 87776281. The next prime is 87776317. The reversal of 87776305 is 50367778.

It can be written as a sum of positive squares in 4 ways, for example, as 28901376 + 58874929 = 5376^2 + 7673^2 .

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 87776305 - 2¹³ = 87768113 is a prime.

It is a Duffinian 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, 43572 + ... + 45541.

It is an arithmetic number, because the mean of its divisors is an integer number (13233429).

Almost surely, 2^87776305 is an apocalyptic number.

It is an amenable number.

87776305 is a deficient number, since it is larger than the sum of its proper divisors (18091127).

87776305 is a wasteful number, since it uses less digits than its factorization.

87776305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89315.

The product of its (nonzero) digits is 246960, while the sum is 43.

The square root of 87776305 is about 9368.9009494177. The cubic root of 87776305 is about 444.4188095052.

The spelling of 87776305 in words is "eighty-seven million, seven hundred seventy-six thousand, three hundred five".