77344087 has 2 divisors, whose sum is σ = 77344088. Its totient is φ = 77344086.

The previous prime is 77344021. The next prime is 77344109. The reversal of 77344087 is 78044377.

It is a strong prime.

It is an emirp because it is prime and its reverse (78044377) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77344087 - 2¹⁵ = 77311319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77344387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38672043 + 38672044.

It is an arithmetic number, because the mean of its divisors is an integer number (38672044).

Almost surely, 2^77344087 is an apocalyptic number.

77344087 is a deficient number, since it is larger than the sum of its proper divisors (1).

77344087 is an equidigital number, since it uses as much as digits as its factorization.

77344087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 131712, while the sum is 40.

The square root of 77344087 is about 8794.5487092858. The cubic root of 77344087 is about 426.0648490255.

The spelling of 77344087 in words is "seventy-seven million, three hundred forty-four thousand, eighty-seven".