20700355 has 8 divisors (see below), whose sum is σ = 26751312. Its totient is φ = 15286368.

The previous prime is 20700349. The next prime is 20700359. The reversal of 20700355 is 55300702.

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 20700355 - 2³ = 20700347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20700359) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159169 + ... + 159298.

It is an arithmetic number, because the mean of its divisors is an integer number (3343914).

Almost surely, 2^20700355 is an apocalyptic number.

20700355 is a deficient number, since it is larger than the sum of its proper divisors (6050957).

20700355 is a wasteful number, since it uses less digits than its factorization.

20700355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318485.

The product of its (nonzero) digits is 1050, while the sum is 22.

The square root of 20700355 is about 4549.7642796083. The cubic root of 20700355 is about 274.5739076352.

The spelling of 20700355 in words is "twenty million, seven hundred thousand, three hundred fifty-five".