34724621 has 4 divisors (see below), whose sum is σ = 34742172. Its totient is φ = 34707072.

The previous prime is 34724597. The next prime is 34724623. The reversal of 34724621 is 12642743.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16491721 + 18232900 = 4061^2 + 4270^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-34724621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34724623) 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, 5366 + ... + 9911.

It is an arithmetic number, because the mean of its divisors is an integer number (8685543).

Almost surely, 2^34724621 is an apocalyptic number.

It is an amenable number.

34724621 is a deficient number, since it is larger than the sum of its proper divisors (17551).

34724621 is a wasteful number, since it uses less digits than its factorization.

34724621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17550.

The product of its digits is 8064, while the sum is 29.

The square root of 34724621 is about 5892.7600494166. The cubic root of 34724621 is about 326.2464826424.

The spelling of 34724621 in words is "thirty-four million, seven hundred twenty-four thousand, six hundred twenty-one".