20760649 has 8 divisors (see below), whose sum is σ = 25551680. Its totient is φ = 16425936.

The previous prime is 20760643. The next prime is 20760653. The reversal of 20760649 is 94606702.

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 20760649 - 2⁹ = 20760137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20760643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113979 + ... + 114160.

It is an arithmetic number, because the mean of its divisors is an integer number (3193960).

Almost surely, 2^20760649 is an apocalyptic number.

It is an amenable number.

20760649 is a deficient number, since it is larger than the sum of its proper divisors (4791031).

20760649 is a wasteful number, since it uses less digits than its factorization.

20760649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228159.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 20760649 is about 4556.3855192466. The cubic root of 20760649 is about 274.8402333692.

The spelling of 20760649 in words is "twenty million, seven hundred sixty thousand, six hundred forty-nine".