66267645 has 16 divisors (see below), whose sum is σ = 106131840. Its totient is φ = 35308224.

The previous prime is 66267613. The next prime is 66267647. The reversal of 66267645 is 54676266.

It is not a de Polignac number, because 66267645 - 2⁵ = 66267613 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66267597 and 66267606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66267647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23712 + ... + 26358.

It is an arithmetic number, because the mean of its divisors is an integer number (6633240).

Almost surely, 2^66267645 is an apocalyptic number.

It is an amenable number.

66267645 is a deficient number, since it is larger than the sum of its proper divisors (39864195).

66267645 is a wasteful number, since it uses less digits than its factorization.

66267645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4324.

The product of its digits is 362880, while the sum is 42.

The square root of 66267645 is about 8140.4941496202. The cubic root of 66267645 is about 404.6695368611.

The spelling of 66267645 in words is "sixty-six million, two hundred sixty-seven thousand, six hundred forty-five".