6701403521 has 2 divisors, whose sum is σ = 6701403522. Its totient is φ = 6701403520.

The previous prime is 6701403461. The next prime is 6701403523. The reversal of 6701403521 is 1253041076.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3565403521 + 3136000000 = 59711^2 + 56000^2 .

It is a cyclic number.

It is not a de Polignac number, because 6701403521 - 2¹⁰ = 6701402497 is a prime.

Together with 6701403523, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6701403523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3350701760 + 3350701761.

It is an arithmetic number, because the mean of its divisors is an integer number (3350701761).

Almost surely, 2^6701403521 is an apocalyptic number.

It is an amenable number.

6701403521 is a deficient number, since it is larger than the sum of its proper divisors (1).

6701403521 is an equidigital number, since it uses as much as digits as its factorization.

6701403521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 6701403521 is about 81862.1006388182. The cubic root of 6701403521 is about 1885.3352597847.

Adding to 6701403521 its reverse (1253041076), we get a palindrome (7954444597).

The spelling of 6701403521 in words is "six billion, seven hundred one million, four hundred three thousand, five hundred twenty-one".