76813887 has 8 divisors (see below), whose sum is σ = 105186736. Its totient is φ = 49825152.

The previous prime is 76813873. The next prime is 76813901. The reversal of 76813887 is 78831867.

It is an interprime number because it is at equal distance from previous prime (76813873) and next prime (76813901).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 76813887 - 2¹⁵ = 76781119 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 (76813817) 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, 345898 + ... + 346119.

It is an arithmetic number, because the mean of its divisors is an integer number (13148342).

Almost surely, 2^76813887 is an apocalyptic number.

76813887 is a deficient number, since it is larger than the sum of its proper divisors (28372849).

76813887 is a wasteful number, since it uses less digits than its factorization.

76813887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692057.

The product of its digits is 451584, while the sum is 48.

The square root of 76813887 is about 8764.3531991813. The cubic root of 76813887 is about 425.0890461629.

The spelling of 76813887 in words is "seventy-six million, eight hundred thirteen thousand, eight hundred eighty-seven".