34640647 has 4 divisors (see below), whose sum is σ = 34913536. Its totient is φ = 34367760.

The previous prime is 34640633. The next prime is 34640657. The reversal of 34640647 is 74604643.

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

It is a cyclic number.

It is not a de Polignac number, because 34640647 - 2¹⁵ = 34607879 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 (34640657) 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, 136254 + ... + 136507.

It is an arithmetic number, because the mean of its divisors is an integer number (8728384).

Almost surely, 2^34640647 is an apocalyptic number.

34640647 is a deficient number, since it is larger than the sum of its proper divisors (272889).

34640647 is a wasteful number, since it uses less digits than its factorization.

34640647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272888.

The product of its (nonzero) digits is 48384, while the sum is 34.

The square root of 34640647 is about 5885.6305524557. The cubic root of 34640647 is about 325.9832848017.

The spelling of 34640647 in words is "thirty-four million, six hundred forty thousand, six hundred forty-seven".