20707677 has 16 divisors (see below), whose sum is σ = 30816000. Its totient is φ = 13743072.

The previous prime is 20707669. The next prime is 20707681. The reversal of 20707677 is 77670702.

It is a happy number.

It is not a de Polignac number, because 20707677 - 2³ = 20707669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20707607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4849 + ... + 8057.

It is an arithmetic number, because the mean of its divisors is an integer number (1926000).

Almost surely, 2^20707677 is an apocalyptic number.

20707677 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

20707677 is a deficient number, since it is larger than the sum of its proper divisors (10108323).

20707677 is a wasteful number, since it uses less digits than its factorization.

20707677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3457 (or 3451 counting only the distinct ones).

The product of its (nonzero) digits is 28812, while the sum is 36.

The square root of 20707677 is about 4550.5688655376. The cubic root of 20707677 is about 274.6062773403.

The spelling of 20707677 in words is "twenty million, seven hundred seven thousand, six hundred seventy-seven".