20607907 has 2 divisors, whose sum is σ = 20607908. Its totient is φ = 20607906.

The previous prime is 20607889. The next prime is 20607911. The reversal of 20607907 is 70970602.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20607907 - 2¹¹ = 20605859 is a prime.

It is equal to p_1306669 and since 20607907 and 1306669 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 (20607007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10303953 + 10303954.

It is an arithmetic number, because the mean of its divisors is an integer number (10303954).

Almost surely, 2^20607907 is an apocalyptic number.

20607907 is a deficient number, since it is larger than the sum of its proper divisors (1).

20607907 is an equidigital number, since it uses as much as digits as its factorization.

20607907 is an evil number, because the sum of its binary digits is even.

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

The square root of 20607907 is about 4539.5932637187. The cubic root of 20607907 is about 274.1645476545.

The spelling of 20607907 in words is "twenty million, six hundred seven thousand, nine hundred seven".