75825987 has 16 divisors (see below), whose sum is σ = 105801120. Its totient is φ = 48252672.

The previous prime is 75825983. The next prime is 75825991. The reversal of 75825987 is 78952857.

It is an interprime number because it is at equal distance from previous prime (75825983) and next prime (75825991).

It is not a de Polignac number, because 75825987 - 2² = 75825983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (75825983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 562 + ... + 12327.

It is an arithmetic number, because the mean of its divisors is an integer number (6612570).

Almost surely, 2^75825987 is an apocalyptic number.

75825987 is a deficient number, since it is larger than the sum of its proper divisors (29975133).

75825987 is a wasteful number, since it uses less digits than its factorization.

75825987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12982.

The product of its digits is 1411200, while the sum is 51.

The square root of 75825987 is about 8707.8118376547. The cubic root of 75825987 is about 423.2588270032.

The spelling of 75825987 in words is "seventy-five million, eight hundred twenty-five thousand, nine hundred eighty-seven".