77422013 has 2 divisors, whose sum is σ = 77422014. Its totient is φ = 77422012.

The previous prime is 77422003. The next prime is 77422031. The reversal of 77422013 is 31022477.

Together with next prime (77422031) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63568729 + 13853284 = 7973^2 + 3722^2 .

It is a cyclic number.

It is not a de Polignac number, because 77422013 - 2⁴ = 77421997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77422003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38711006 + 38711007.

It is an arithmetic number, because the mean of its divisors is an integer number (38711007).

Almost surely, 2^77422013 is an apocalyptic number.

It is an amenable number.

77422013 is a deficient number, since it is larger than the sum of its proper divisors (1).

77422013 is an equidigital number, since it uses as much as digits as its factorization.

77422013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 77422013 is about 8798.9779520124. The cubic root of 77422013 is about 426.2078911398.

The spelling of 77422013 in words is "seventy-seven million, four hundred twenty-two thousand, thirteen".