76220087 has 4 divisors (see below), whose sum is σ = 76776576. Its totient is φ = 75663600.

The previous prime is 76220063. The next prime is 76220099. The reversal of 76220087 is 78002267.

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

It is a cyclic number.

It is not a de Polignac number, because 76220087 - 2¹⁴ = 76203703 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 (76220047) 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, 278039 + ... + 278312.

It is an arithmetic number, because the mean of its divisors is an integer number (19194144).

Almost surely, 2^76220087 is an apocalyptic number.

76220087 is a deficient number, since it is larger than the sum of its proper divisors (556489).

76220087 is a wasteful number, since it uses less digits than its factorization.

76220087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556488.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 76220087 is about 8730.4116168712. The cubic root of 76220087 is about 423.9908458181.

The spelling of 76220087 in words is "seventy-six million, two hundred twenty thousand, eighty-seven".