700026721 has 2 divisors, whose sum is σ = 700026722. Its totient is φ = 700026720.

The previous prime is 700026637. The next prime is 700026727. The reversal of 700026721 is 127620007.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 419799121 + 280227600 = 20489^2 + 16740^2 .

It is a cyclic number.

It is not a de Polignac number, because 700026721 - 2¹¹ = 700024673 is a prime.

It is a super-2 number, since 2×700026721² = 980074820228023682, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (700026727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 350013360 + 350013361.

It is an arithmetic number, because the mean of its divisors is an integer number (350013361).

Almost surely, 2^700026721 is an apocalyptic number.

It is an amenable number.

700026721 is a deficient number, since it is larger than the sum of its proper divisors (1).

700026721 is an equidigital number, since it uses as much as digits as its factorization.

700026721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 700026721 is about 26458.0180852610. The cubic root of 700026721 is about 887.9152995431.

Adding to 700026721 its reverse (127620007), we get a palindrome (827646728).

The spelling of 700026721 in words is "seven hundred million, twenty-six thousand, seven hundred twenty-one".