21060067 has 32 divisors (see below), whose sum is σ = 26537984. Its totient is φ = 16329600.

The previous prime is 21060049. The next prime is 21060073. The reversal of 21060067 is 76006012.

It is not a de Polignac number, because 21060067 - 2⁷ = 21059939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21060077) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 345217 + ... + 345277.

It is an arithmetic number, because the mean of its divisors is an integer number (829312).

Almost surely, 2^21060067 is an apocalyptic number.

21060067 is a deficient number, since it is larger than the sum of its proper divisors (5477917).

21060067 is a wasteful number, since it uses less digits than its factorization.

21060067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 21060067 is about 4589.1248621061. The cubic root of 21060067 is about 276.1552153270.

Adding to 21060067 its reverse (76006012), we get a palindrome (97066079).

The spelling of 21060067 in words is "twenty-one million, sixty thousand, sixty-seven".