66454005 has 16 divisors (see below), whose sum is σ = 108589824. Its totient is φ = 34687680.

The previous prime is 66453991. The next prime is 66454009. The reversal of 66454005 is 50045466.

It is not a de Polignac number, because 66454005 - 2¹² = 66449909 is a prime.

It is a super-2 number, since 2×66454005² = 8832269561080050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66454009) 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, 46426 + ... + 47835.

It is an arithmetic number, because the mean of its divisors is an integer number (6786864).

Almost surely, 2^66454005 is an apocalyptic number.

It is an amenable number.

66454005 is a deficient number, since it is larger than the sum of its proper divisors (42135819).

66454005 is a wasteful number, since it uses less digits than its factorization.

66454005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94316.

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 66454005 is about 8151.9325929500. The cubic root of 66454005 is about 405.0485233738.

The spelling of 66454005 in words is "sixty-six million, four hundred fifty-four thousand, five".