34638649 has 4 divisors (see below), whose sum is σ = 34656336. Its totient is φ = 34620964.

The previous prime is 34638631. The next prime is 34638677. The reversal of 34638649 is 94683643.

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.

It is a cyclic number.

It is not a de Polignac number, because 34638649 - 2¹⁵ = 34605881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (34638629) 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, 5479 + ... + 9964.

It is an arithmetic number, because the mean of its divisors is an integer number (8664084).

Almost surely, 2^34638649 is an apocalyptic number.

It is an amenable number.

34638649 is a deficient number, since it is larger than the sum of its proper divisors (17687).

34638649 is a wasteful number, since it uses less digits than its factorization.

34638649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17686.

The product of its digits is 373248, while the sum is 43.

The square root of 34638649 is about 5885.4608145837. The cubic root of 34638649 is about 325.9770173367.

The spelling of 34638649 in words is "thirty-four million, six hundred thirty-eight thousand, six hundred forty-nine".