76847087 has 4 divisors (see below), whose sum is σ = 78149640. Its totient is φ = 75544536.

The previous prime is 76847081. The next prime is 76847093. The reversal of 76847087 is 78074867.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78074867 = 13 ⋅6005759.

It is an interprime number because it is at equal distance from previous prime (76847081) and next prime (76847093).

It is a cyclic number.

It is not a de Polignac number, because 76847087 - 2¹² = 76842991 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 (76847081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 651188 + ... + 651305.

It is an arithmetic number, because the mean of its divisors is an integer number (19537410).

Almost surely, 2^76847087 is an apocalyptic number.

76847087 is a deficient number, since it is larger than the sum of its proper divisors (1302553).

76847087 is a wasteful number, since it uses less digits than its factorization.

76847087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1302552.

The product of its (nonzero) digits is 526848, while the sum is 47.

The square root of 76847087 is about 8766.2470305143. The cubic root of 76847087 is about 425.1502804184.

The spelling of 76847087 in words is "seventy-six million, eight hundred forty-seven thousand, eighty-seven".