20340677 has 8 divisors (see below), whose sum is σ = 23787456. Its totient is φ = 17029152.

The previous prime is 20340643. The next prime is 20340679. The reversal of 20340677 is 77604302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20340677 - 2¹⁰ = 20339653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20340679) 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, 33488 + ... + 34089.

It is an arithmetic number, because the mean of its divisors is an integer number (2973432).

Almost surely, 2^20340677 is an apocalyptic number.

It is an amenable number.

20340677 is a deficient number, since it is larger than the sum of its proper divisors (3446779).

20340677 is an equidigital number, since it uses as much as digits as its factorization.

20340677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67627.

The product of its (nonzero) digits is 7056, while the sum is 29.

The square root of 20340677 is about 4510.0639685042. The cubic root of 20340677 is about 272.9743252521.

Adding to 20340677 its reverse (77604302), we get a palindrome (97944979).

The spelling of 20340677 in words is "twenty million, three hundred forty thousand, six hundred seventy-seven".