20734655 has 8 divisors (see below), whose sum is σ = 25078272. Its totient is φ = 16456608.

The previous prime is 20734633. The next prime is 20734663. The reversal of 20734655 is 55643702.

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 20734655 - 2¹⁰ = 20733631 is a prime.

It is a Duffinian number.

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, 15692 + ... + 16961.

It is an arithmetic number, because the mean of its divisors is an integer number (3134784).

Almost surely, 2^20734655 is an apocalyptic number.

20734655 is a deficient number, since it is larger than the sum of its proper divisors (4343617).

20734655 is a wasteful number, since it uses less digits than its factorization.

20734655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32785.

The product of its (nonzero) digits is 25200, while the sum is 32.

The square root of 20734655 is about 4553.5321454888. The cubic root of 20734655 is about 274.7254781127.

The spelling of 20734655 in words is "twenty million, seven hundred thirty-four thousand, six hundred fifty-five".