20630753 has 8 divisors (see below), whose sum is σ = 24237696. Its totient is φ = 17312400.

The previous prime is 20630711. The next prime is 20630761. The reversal of 20630753 is 35703602.

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 20630753 - 2¹² = 20626657 is a prime.

It is a super-3 number, since 3×20630753³ (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 (20630773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71993 + ... + 72278.

It is an arithmetic number, because the mean of its divisors is an integer number (3029712).

Almost surely, 2^20630753 is an apocalyptic number.

It is an amenable number.

20630753 is a deficient number, since it is larger than the sum of its proper divisors (3606943).

20630753 is a wasteful number, since it uses less digits than its factorization.

20630753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144295.

The product of its (nonzero) digits is 3780, while the sum is 26.

The square root of 20630753 is about 4542.1088714385. The cubic root of 20630753 is about 274.2658235075.

The spelling of 20630753 in words is "twenty million, six hundred thirty thousand, seven hundred fifty-three".