34900721 has 2 divisors, whose sum is σ = 34900722. Its totient is φ = 34900720.

The previous prime is 34900709. The next prime is 34900741. The reversal of 34900721 is 12700943.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33223696 + 1677025 = 5764^2 + 1295^2 .

It is an emirp because it is prime and its reverse (12700943) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 34900721 - 2¹⁴ = 34884337 is a prime.

It is not a weakly prime, because it can be changed into another prime (34900741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17450360 + 17450361.

It is an arithmetic number, because the mean of its divisors is an integer number (17450361).

Almost surely, 2^34900721 is an apocalyptic number.

It is an amenable number.

34900721 is a deficient number, since it is larger than the sum of its proper divisors (1).

34900721 is an equidigital number, since it uses as much as digits as its factorization.

34900721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 34900721 is about 5907.6832176412. The cubic root of 34900721 is about 326.7970541321.

The spelling of 34900721 in words is "thirty-four million, nine hundred thousand, seven hundred twenty-one".