77347001 has 2 divisors, whose sum is σ = 77347002. Its totient is φ = 77347000.

The previous prime is 77346989. The next prime is 77347021. The reversal of 77347001 is 10074377.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55115776 + 22231225 = 7424^2 + 4715^2 .

It is an emirp because it is prime and its reverse (10074377) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77347001 is a prime.

It is a Chen prime.

It is equal to p_4523654 and since 77347001 and 4523654 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (77347021) 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 as a sum of consecutive naturals, namely, 38673500 + 38673501.

It is an arithmetic number, because the mean of its divisors is an integer number (38673501).

Almost surely, 2^77347001 is an apocalyptic number.

It is an amenable number.

77347001 is a deficient number, since it is larger than the sum of its proper divisors (1).

77347001 is an equidigital number, since it uses as much as digits as its factorization.

77347001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4116, while the sum is 29.

The square root of 77347001 is about 8794.7143785344. The cubic root of 77347001 is about 426.0701997356.

It can be divided in two parts, 773 and 47001, that added together give a palindrome (47774).

The spelling of 77347001 in words is "seventy-seven million, three hundred forty-seven thousand, one".