20734977 has 8 divisors (see below), whose sum is σ = 27980064. Its totient is φ = 13656608.

The previous prime is 20734969. The next prime is 20734981. The reversal of 20734977 is 77943702.

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

It is a cyclic number.

It is not a de Polignac number, because 20734977 - 2³ = 20734969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20734957) 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, 41388 + ... + 41885.

It is an arithmetic number, because the mean of its divisors is an integer number (3497508).

Almost surely, 2^20734977 is an apocalyptic number.

It is an amenable number.

20734977 is a deficient number, since it is larger than the sum of its proper divisors (7245087).

20734977 is an equidigital number, since it uses as much as digits as its factorization.

20734977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83359.

The product of its (nonzero) digits is 74088, while the sum is 39.

The square root of 20734977 is about 4553.5675025193. The cubic root of 20734977 is about 274.7269002270.

The spelling of 20734977 in words is "twenty million, seven hundred thirty-four thousand, nine hundred seventy-seven".