20474693 has 2 divisors, whose sum is σ = 20474694. Its totient is φ = 20474692.

The previous prime is 20474687. The next prime is 20474743. The reversal of 20474693 is 39647402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10975969 + 9498724 = 3313^2 + 3082^2 .

It is a cyclic number.

It is not a de Polignac number, because 20474693 - 2⁴ = 20474677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20474603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10237346 + 10237347.

It is an arithmetic number, because the mean of its divisors is an integer number (10237347).

Almost surely, 2^20474693 is an apocalyptic number.

It is an amenable number.

20474693 is a deficient number, since it is larger than the sum of its proper divisors (1).

20474693 is an equidigital number, since it uses as much as digits as its factorization.

20474693 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 20474693 is about 4524.8970154027. The cubic root of 20474693 is about 273.5725170247.

The spelling of 20474693 in words is "twenty million, four hundred seventy-four thousand, six hundred ninety-three".