7087985 has 4 divisors (see below), whose sum is σ = 8505588. Its totient is φ = 5670384.

The previous prime is 7087973. The next prime is 7087987. The reversal of 7087985 is 5897807.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4804864 + 2283121 = 2192^2 + 1511^2 .

It is a cyclic number.

It is not a de Polignac number, because 7087985 - 2⁶ = 7087921 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7087987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 708794 + ... + 708803.

It is an arithmetic number, because the mean of its divisors is an integer number (2126397).

Almost surely, 2^7087985 is an apocalyptic number.

It is an amenable number.

7087985 is a deficient number, since it is larger than the sum of its proper divisors (1417603).

7087985 is a wasteful number, since it uses less digits than its factorization.

7087985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1417602.

The product of its (nonzero) digits is 141120, while the sum is 44.

The square root of 7087985 is about 2662.3269896840. The cubic root of 7087985 is about 192.0912561713.

The spelling of 7087985 in words is "seven million, eighty-seven thousand, nine hundred eighty-five".