20427607 has 4 divisors (see below), whose sum is σ = 20550096. Its totient is φ = 20305120.

The previous prime is 20427601. The next prime is 20427613. The reversal of 20427607 is 70672402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70672402 = 2 ⋅35336201.

It is an interprime number because it is at equal distance from previous prime (20427601) and next prime (20427613).

It is a cyclic number.

It is not a de Polignac number, because 20427607 - 2³ = 20427599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20427601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60994 + ... + 61327.

It is an arithmetic number, because the mean of its divisors is an integer number (5137524).

Almost surely, 2^20427607 is an apocalyptic number.

20427607 is a deficient number, since it is larger than the sum of its proper divisors (122489).

20427607 is a wasteful number, since it uses less digits than its factorization.

20427607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122488.

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 20427607 is about 4519.6910292630. The cubic root of 20427607 is about 273.3626429341.

The spelling of 20427607 in words is "twenty million, four hundred twenty-seven thousand, six hundred seven".