34627721 has 2 divisors, whose sum is σ = 34627722. Its totient is φ = 34627720.

The previous prime is 34627699. The next prime is 34627753. The reversal of 34627721 is 12772643.

It is an a-pointer prime, because the next prime (34627753) can be obtained adding 34627721 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26988025 + 7639696 = 5195^2 + 2764^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-34627721 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (34627781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17313860 + 17313861.

It is an arithmetic number, because the mean of its divisors is an integer number (17313861).

Almost surely, 2^34627721 is an apocalyptic number.

It is an amenable number.

34627721 is a deficient number, since it is larger than the sum of its proper divisors (1).

34627721 is an equidigital number, since it uses as much as digits as its factorization.

34627721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14112, while the sum is 32.

The square root of 34627721 is about 5884.5323518526. The cubic root of 34627721 is about 325.9427333637.

The spelling of 34627721 in words is "thirty-four million, six hundred twenty-seven thousand, seven hundred twenty-one".