66002445 has 24 divisors (see below), whose sum is σ = 118643616. Its totient is φ = 35200656.

The previous prime is 66002407. The next prime is 66002459. The reversal of 66002445 is 54420066.

It is a happy number.

It is not a de Polignac number, because 66002445 - 2⁹ = 66001933 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25947 + ... + 28376.

It is an arithmetic number, because the mean of its divisors is an integer number (4943484).

Almost surely, 2^66002445 is an apocalyptic number.

It is an amenable number.

66002445 is a deficient number, since it is larger than the sum of its proper divisors (52641171).

66002445 is an equidigital number, since it uses as much as digits as its factorization.

66002445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54343 (or 54331 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 66002445 is about 8124.1888825901. The cubic root of 66002445 is about 404.1289923197.

It can be divided in two parts, 6600 and 2445, that added together give a triangular number (9045 = T₁₃₄).

The spelling of 66002445 in words is "sixty-six million, two thousand, four hundred forty-five".