20770753 has 8 divisors (see below), whose sum is σ = 22408488. Its totient is φ = 19179264.

The previous prime is 20770747. The next prime is 20770777. The reversal of 20770753 is 35707702.

It can be written as a sum of positive squares in 4 ways, for example, as 10575504 + 10195249 = 3252^2 + 3193^2 .

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

It is not a de Polignac number, because 20770753 - 2⁵ = 20770721 is a prime.

It is a super-3 number, since 3×20770753³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20770703) 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, 10626 + ... + 12427.

It is an arithmetic number, because the mean of its divisors is an integer number (2801061).

Almost surely, 2^20770753 is an apocalyptic number.

It is an amenable number.

20770753 is a deficient number, since it is larger than the sum of its proper divisors (1637735).

20770753 is a wasteful number, since it uses less digits than its factorization.

20770753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23123.

The product of its (nonzero) digits is 10290, while the sum is 31.

The square root of 20770753 is about 4557.4941579776. The cubic root of 20770753 is about 274.8848134677.

The spelling of 20770753 in words is "twenty million, seven hundred seventy thousand, seven hundred fifty-three".