34651621 has 4 divisors (see below), whose sum is σ = 35139744. Its totient is φ = 34163500.

The previous prime is 34651609. The next prime is 34651633. The reversal of 34651621 is 12615643.

34651621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12615643 = 53 ⋅238031.

It is an interprime number because it is at equal distance from previous prime (34651609) and next prime (34651633).

It is a cyclic number.

It is not a de Polignac number, because 34651621 - 2⁷ = 34651493 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 34651621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34651651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 243955 + ... + 244096.

It is an arithmetic number, because the mean of its divisors is an integer number (8784936).

Almost surely, 2^34651621 is an apocalyptic number.

It is an amenable number.

34651621 is a deficient number, since it is larger than the sum of its proper divisors (488123).

34651621 is an equidigital number, since it uses as much as digits as its factorization.

34651621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488122.

The product of its digits is 4320, while the sum is 28.

The square root of 34651621 is about 5886.5627491771. The cubic root of 34651621 is about 326.0177045098.

The spelling of 34651621 in words is "thirty-four million, six hundred fifty-one thousand, six hundred twenty-one".