20600977 has 2 divisors, whose sum is σ = 20600978. Its totient is φ = 20600976.

The previous prime is 20600969. The next prime is 20601023. The reversal of 20600977 is 77900602.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11015761 + 9585216 = 3319^2 + 3096^2 .

It is a cyclic number.

It is not a de Polignac number, because 20600977 - 2³ = 20600969 is a prime.

It is not a weakly prime, because it can be changed into another prime (20600947) 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 as a sum of consecutive naturals, namely, 10300488 + 10300489.

It is an arithmetic number, because the mean of its divisors is an integer number (10300489).

Almost surely, 2^20600977 is an apocalyptic number.

It is an amenable number.

20600977 is a deficient number, since it is larger than the sum of its proper divisors (1).

20600977 is an equidigital number, since it uses as much as digits as its factorization.

20600977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5292, while the sum is 31.

The square root of 20600977 is about 4538.8299152976. The cubic root of 20600977 is about 274.1338123106.

The spelling of 20600977 in words is "twenty million, six hundred thousand, nine hundred seventy-seven".