34653821 has 2 divisors, whose sum is σ = 34653822. Its totient is φ = 34653820.

The previous prime is 34653809. The next prime is 34653833. The reversal of 34653821 is 12835643.

It is a balanced prime because it is at equal distance from previous prime (34653809) and next prime (34653833).

It can be written as a sum of positive squares in only one way, i.e., 34351321 + 302500 = 5861^2 + 550^2 .

It is a cyclic number.

It is not a de Polignac number, because 34653821 - 2¹⁸ = 34391677 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34653851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17326910 + 17326911.

It is an arithmetic number, because the mean of its divisors is an integer number (17326911).

Almost surely, 2^34653821 is an apocalyptic number.

It is an amenable number.

34653821 is a deficient number, since it is larger than the sum of its proper divisors (1).

34653821 is an equidigital number, since it uses as much as digits as its factorization.

34653821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 32.

The square root of 34653821 is about 5886.7496124772. The cubic root of 34653821 is about 326.0246038866.

The spelling of 34653821 in words is "thirty-four million, six hundred fifty-three thousand, eight hundred twenty-one".