76745887 has 4 divisors (see below), whose sum is σ = 77891416. Its totient is φ = 75600360.

The previous prime is 76745873. The next prime is 76745909. The reversal of 76745887 is 78854767.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76745887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76745087) 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 3 ways as a sum of consecutive naturals, for example, 572664 + ... + 572797.

It is an arithmetic number, because the mean of its divisors is an integer number (19472854).

Almost surely, 2^76745887 is an apocalyptic number.

76745887 is a deficient number, since it is larger than the sum of its proper divisors (1145529).

76745887 is a wasteful number, since it uses less digits than its factorization.

76745887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1145528.

The product of its digits is 2634240, while the sum is 52.

The square root of 76745887 is about 8760.4729895138. The cubic root of 76745887 is about 424.9635715028.

The spelling of 76745887 in words is "seventy-six million, seven hundred forty-five thousand, eight hundred eighty-seven".