20276567 has 2 divisors, whose sum is σ = 20276568. Its totient is φ = 20276566.

The previous prime is 20276561. The next prime is 20276569. The reversal of 20276567 is 76567202.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20276567 - 2¹² = 20272471 is a prime.

It is a super-2 number, since 2×20276567² = 822278338610978, which contains 22 as substring.

Together with 20276569, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20276561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10138283 + 10138284.

It is an arithmetic number, because the mean of its divisors is an integer number (10138284).

Almost surely, 2^20276567 is an apocalyptic number.

20276567 is a deficient number, since it is larger than the sum of its proper divisors (1).

20276567 is an equidigital number, since it uses as much as digits as its factorization.

20276567 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35280, while the sum is 35.

The square root of 20276567 is about 4502.9509213404. The cubic root of 20276567 is about 272.6872354594.

The spelling of 20276567 in words is "twenty million, two hundred seventy-six thousand, five hundred sixty-seven".