20074997 has 4 divisors (see below), whose sum is σ = 20208096. Its totient is φ = 19941900.

The previous prime is 20074993. The next prime is 20075051. The reversal of 20074997 is 79947002.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20074997 - 2² = 20074993 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20074997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20074993) 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 3 ways as a sum of consecutive naturals, for example, 66323 + ... + 66624.

It is an arithmetic number, because the mean of its divisors is an integer number (5052024).

Almost surely, 2^20074997 is an apocalyptic number.

It is an amenable number.

20074997 is a deficient number, since it is larger than the sum of its proper divisors (133099).

20074997 is a wasteful number, since it uses less digits than its factorization.

20074997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133098.

The product of its (nonzero) digits is 31752, while the sum is 38.

The square root of 20074997 is about 4480.5130286609. The cubic root of 20074997 is about 271.7806270769.

The spelling of 20074997 in words is "twenty million, seventy-four thousand, nine hundred ninety-seven".