75745687 has 8 divisors (see below), whose sum is σ = 76578320. Its totient is φ = 74917440.

The previous prime is 75745673. The next prime is 75745729. The reversal of 75745687 is 78654757.

It is a happy number.

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 75745687 - 2⁷ = 75745559 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 75745687.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75745667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42637 + ... + 44377.

It is an arithmetic number, because the mean of its divisors is an integer number (9572290).

Almost surely, 2^75745687 is an apocalyptic number.

75745687 is a deficient number, since it is larger than the sum of its proper divisors (832633).

75745687 is a wasteful number, since it uses less digits than its factorization.

75745687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2193.

The product of its digits is 1646400, while the sum is 49.

The square root of 75745687 is about 8703.1998138616. The cubic root of 75745687 is about 423.1093633434.

The spelling of 75745687 in words is "seventy-five million, seven hundred forty-five thousand, six hundred eighty-seven".