87707385 has 12 divisors (see below), whose sum is σ = 152026212. Its totient is φ = 46777248.

The previous prime is 87707329. The next prime is 87707407. The reversal of 87707385 is 58370778.

It can be written as a sum of positive squares in 2 ways, for example, as 33419961 + 54287424 = 5781^2 + 7368^2 .

It is not a de Polignac number, because 87707385 - 2⁹ = 87706873 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 1949053 = 87707385 / (8 + 7 + 7 + 0 + 7 + 3 + 8 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 87707385.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 974482 + ... + 974571.

It is an arithmetic number, because the mean of its divisors is an integer number (12668851).

Almost surely, 2^87707385 is an apocalyptic number.

It is an amenable number.

87707385 is a deficient number, since it is larger than the sum of its proper divisors (64318827).

87707385 is a wasteful number, since it uses less digits than its factorization.

87707385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1949064 (or 1949061 counting only the distinct ones).

The product of its (nonzero) digits is 329280, while the sum is 45.

The square root of 87707385 is about 9365.2221009435. Note that the first 3 decimals coincide. The cubic root of 87707385 is about 444.3024631316.

The spelling of 87707385 in words is "eighty-seven million, seven hundred seven thousand, three hundred eighty-five".