34639685 has 8 divisors (see below), whose sum is σ = 41750520. Its totient is φ = 27589824.

The previous prime is 34639673. The next prime is 34639697. The reversal of 34639685 is 58693643.

It is an interprime number because it is at equal distance from previous prime (34639673) and next prime (34639697).

It can be written as a sum of positive squares in 4 ways, for example, as 20268004 + 14371681 = 4502^2 + 3791^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 34639685 - 2²² = 30445381 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13982 + ... + 16271.

It is an arithmetic number, because the mean of its divisors is an integer number (5218815).

Almost surely, 2^34639685 is an apocalyptic number.

It is an amenable number.

34639685 is a deficient number, since it is larger than the sum of its proper divisors (7110835).

34639685 is a wasteful number, since it uses less digits than its factorization.

34639685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30487.

The product of its digits is 466560, while the sum is 44.

The square root of 34639685 is about 5885.5488274247. The cubic root of 34639685 is about 325.9802671635.

The spelling of 34639685 in words is "thirty-four million, six hundred thirty-nine thousand, six hundred eighty-five".