20750479 has 2 divisors, whose sum is σ = 20750480. Its totient is φ = 20750478.

The previous prime is 20750473. The next prime is 20750537. The reversal of 20750479 is 97405702.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20750479 - 2⁵ = 20750447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20750473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10375239 + 10375240.

It is an arithmetic number, because the mean of its divisors is an integer number (10375240).

Almost surely, 2^20750479 is an apocalyptic number.

20750479 is a deficient number, since it is larger than the sum of its proper divisors (1).

20750479 is an equidigital number, since it uses as much as digits as its factorization.

20750479 is an evil number, because the sum of its binary digits is even.

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

The square root of 20750479 is about 4555.2693663493. The cubic root of 20750479 is about 274.7953474617.

The spelling of 20750479 in words is "twenty million, seven hundred fifty thousand, four hundred seventy-nine".