34640656 has 20 divisors (see below), whose sum is σ = 67236892. Its totient is φ = 17289216.

The previous prime is 34640633. The next prime is 34640657. The reversal of 34640656 is 65604643.

It can be written as a sum of positive squares in 2 ways, for example, as 22278400 + 12362256 = 4720^2 + 3516^2 .

It is a super-2 number, since 2×34640656² = 2399950096220672, which contains 22 as substring.

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 pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9160 + ... + 12376.

Almost surely, 2^34640656 is an apocalyptic number.

It is an amenable number.

34640656 is a deficient number, since it is larger than the sum of its proper divisors (32596236).

34640656 is a wasteful number, since it uses less digits than its factorization.

34640656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3898 (or 3892 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 34.

The square root of 34640656 is about 5885.6313170296. The cubic root of 34640656 is about 325.9833130330.

The spelling of 34640656 in words is "thirty-four million, six hundred forty thousand, six hundred fifty-six".