80087985 has 24 divisors (see below), whose sum is σ = 140385960. Its totient is φ = 42231552.

The previous prime is 80087977. The next prime is 80087993. The reversal of 80087985 is 58978008.

It is an interprime number because it is at equal distance from previous prime (80087977) and next prime (80087993).

It can be written as a sum of positive squares in 4 ways, for example, as 10131489 + 69956496 = 3183^2 + 8364^2 .

It is not a de Polignac number, because 80087985 - 2³ = 80087977 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 80087985.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5994 + ... + 14003.

It is an arithmetic number, because the mean of its divisors is an integer number (5849415).

Almost surely, 2^80087985 is an apocalyptic number.

It is an amenable number.

80087985 is a deficient number, since it is larger than the sum of its proper divisors (60297975).

80087985 is a wasteful number, since it uses less digits than its factorization.

80087985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20097 (or 20094 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 45.

The square root of 80087985 is about 8949.1890694074. The cubic root of 80087985 is about 431.0448450780.

The spelling of 80087985 in words is "eighty million, eighty-seven thousand, nine hundred eighty-five".