701788649 has 2 divisors, whose sum is σ = 701788650. Its totient is φ = 701788648.

The previous prime is 701788643. The next prime is 701788651. The reversal of 701788649 is 946887107.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 689587600 + 12201049 = 26260^2 + 3493^2 .

It is a cyclic number.

It is not a de Polignac number, because 701788649 - 2⁸ = 701788393 is a prime.

Together with 701788651, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 701788597 and 701788606.

It is not a weakly prime, because it can be changed into another prime (701788643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 350894324 + 350894325.

It is an arithmetic number, because the mean of its divisors is an integer number (350894325).

Almost surely, 2^701788649 is an apocalyptic number.

It is an amenable number.

701788649 is a deficient number, since it is larger than the sum of its proper divisors (1).

701788649 is an equidigital number, since it uses as much as digits as its factorization.

701788649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 677376, while the sum is 50.

The square root of 701788649 is about 26491.2938340127. The cubic root of 701788649 is about 888.6596197597.

The spelling of 701788649 in words is "seven hundred one million, seven hundred eighty-eight thousand, six hundred forty-nine".