77422087 has 2 divisors, whose sum is σ = 77422088. Its totient is φ = 77422086.

The previous prime is 77422067. The next prime is 77422099. The reversal of 77422087 is 78022477.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 77422087 - 2¹¹ = 77420039 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77422057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38711043 + 38711044.

It is an arithmetic number, because the mean of its divisors is an integer number (38711044).

Almost surely, 2^77422087 is an apocalyptic number.

77422087 is a deficient number, since it is larger than the sum of its proper divisors (1).

77422087 is an equidigital number, since it uses as much as digits as its factorization.

77422087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43904, while the sum is 37.

The square root of 77422087 is about 8798.9821570452. The cubic root of 77422087 is about 426.2080269297.

The spelling of 77422087 in words is "seventy-seven million, four hundred twenty-two thousand, eighty-seven".