66454069 has 8 divisors (see below), whose sum is σ = 72573120. Its totient is φ = 60348000.

The previous prime is 66454067. The next prime is 66454081. The reversal of 66454069 is 96045466.

66454069 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66454069 - 2¹ = 66454067 is a prime.

It is a super-2 number, since 2×66454069² = 8832286573313522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66454067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9744 + ... + 15094.

It is an arithmetic number, because the mean of its divisors is an integer number (9071640).

Almost surely, 2^66454069 is an apocalyptic number.

It is an amenable number.

66454069 is a deficient number, since it is larger than the sum of its proper divisors (6119051).

66454069 is a wasteful number, since it uses less digits than its factorization.

66454069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6491.

The product of its (nonzero) digits is 155520, while the sum is 40.

The square root of 66454069 is about 8151.9365183986. The cubic root of 66454069 is about 405.0486534040.

The spelling of 66454069 in words is "sixty-six million, four hundred fifty-four thousand, sixty-nine".