34662721 has 2 divisors, whose sum is σ = 34662722. Its totient is φ = 34662720.

The previous prime is 34662713. The next prime is 34662737. The reversal of 34662721 is 12726643.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33872400 + 790321 = 5820^2 + 889^2 .

It is an emirp because it is prime and its reverse (12726643) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 34662721 - 2³ = 34662713 is a prime.

It is not a weakly prime, because it can be changed into another prime (34662791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17331360 + 17331361.

It is an arithmetic number, because the mean of its divisors is an integer number (17331361).

Almost surely, 2^34662721 is an apocalyptic number.

It is an amenable number.

34662721 is a deficient number, since it is larger than the sum of its proper divisors (1).

34662721 is an equidigital number, since it uses as much as digits as its factorization.

34662721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 31.

The square root of 34662721 is about 5887.5054989359. The cubic root of 34662721 is about 326.0525120222.

The spelling of 34662721 in words is "thirty-four million, six hundred sixty-two thousand, seven hundred twenty-one".