34906821 has 16 divisors (see below), whose sum is σ = 47190528. Its totient is φ = 22950000.

The previous prime is 34906813. The next prime is 34906829. The reversal of 34906821 is 12860943.

It is an interprime number because it is at equal distance from previous prime (34906813) and next prime (34906829).

It is not a de Polignac number, because 34906821 - 2³ = 34906813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34906829) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113550 + ... + 113856.

It is an arithmetic number, because the mean of its divisors is an integer number (2949408).

Almost surely, 2^34906821 is an apocalyptic number.

It is an amenable number.

34906821 is a deficient number, since it is larger than the sum of its proper divisors (12283707).

34906821 is a wasteful number, since it uses less digits than its factorization.

34906821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 34906821 is about 5908.1994719204. The cubic root of 34906821 is about 326.8160923816.

The spelling of 34906821 in words is "thirty-four million, nine hundred six thousand, eight hundred twenty-one".