20755669 has 8 divisors (see below), whose sum is σ = 23027040. Its totient is φ = 18548400.

The previous prime is 20755661. The next prime is 20755681. The reversal of 20755669 is 96655702.

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 20755669 - 2³ = 20755661 is a prime.

It is a super-2 number, since 2×20755669² = 861595591275122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20755661) 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, 15342 + ... + 16639.

It is an arithmetic number, because the mean of its divisors is an integer number (2878380).

Almost surely, 2^20755669 is an apocalyptic number.

It is an amenable number.

20755669 is a deficient number, since it is larger than the sum of its proper divisors (2271371).

20755669 is a wasteful number, since it uses less digits than its factorization.

20755669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32051.

The product of its (nonzero) digits is 113400, while the sum is 40.

The square root of 20755669 is about 4555.8390006672. The cubic root of 20755669 is about 274.8182556713.

It can be divided in two parts, 2075 and 5669, that added together give a square (7744 = 88²).

The spelling of 20755669 in words is "twenty million, seven hundred fifty-five thousand, six hundred sixty-nine".