34015621 has 4 divisors (see below), whose sum is σ = 34333632. Its totient is φ = 33697612.

The previous prime is 34015601. The next prime is 34015633. The reversal of 34015621 is 12651043.

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: 12651043 = 17 ⋅744179.

It is a cyclic number.

It is not a de Polignac number, because 34015621 - 2⁷ = 34015493 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 34015592 and 34015601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34015601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158845 + ... + 159058.

It is an arithmetic number, because the mean of its divisors is an integer number (8583408).

Almost surely, 2^34015621 is an apocalyptic number.

It is an amenable number.

34015621 is a deficient number, since it is larger than the sum of its proper divisors (318011).

34015621 is a wasteful number, since it uses less digits than its factorization.

34015621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318010.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 34015621 is about 5832.2912307257. The cubic root of 34015621 is about 324.0107862334.

Adding to 34015621 its reverse (12651043), we get a palindrome (46666664).

The spelling of 34015621 in words is "thirty-four million, fifteen thousand, six hundred twenty-one".