20707601 has 2 divisors, whose sum is σ = 20707602. Its totient is φ = 20707600.

The previous prime is 20707579. The next prime is 20707607. The reversal of 20707601 is 10670702.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20566225 + 141376 = 4535^2 + 376^2 .

It is a cyclic number.

It is not a de Polignac number, because 20707601 - 2¹⁴ = 20691217 is a prime.

It is equal to p_1312646 and since 20707601 and 1312646 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (20707607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10353800 + 10353801.

It is an arithmetic number, because the mean of its divisors is an integer number (10353801).

Almost surely, 2^20707601 is an apocalyptic number.

It is an amenable number.

20707601 is a deficient number, since it is larger than the sum of its proper divisors (1).

20707601 is an equidigital number, since it uses as much as digits as its factorization.

20707601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 588, while the sum is 23.

The square root of 20707601 is about 4550.5605149256. The cubic root of 20707601 is about 274.6059413923.

The spelling of 20707601 in words is "twenty million, seven hundred seven thousand, six hundred one".