20754907 has 4 divisors (see below), whose sum is σ = 20797000. Its totient is φ = 20712816.

The previous prime is 20754887. The next prime is 20754911. The reversal of 20754907 is 70945702.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20754907 - 2¹⁹ = 20230619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20754917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20298 + ... + 21295.

It is an arithmetic number, because the mean of its divisors is an integer number (5199250).

Almost surely, 2^20754907 is an apocalyptic number.

20754907 is a deficient number, since it is larger than the sum of its proper divisors (42093).

20754907 is an equidigital number, since it uses as much as digits as its factorization.

20754907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42092.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 20754907 is about 4555.7553709566. The cubic root of 20754907 is about 274.8148925086.

The spelling of 20754907 in words is "twenty million, seven hundred fifty-four thousand, nine hundred seven".