66702445 has 8 divisors (see below), whose sum is σ = 84255840. Its totient is φ = 50553360.

The previous prime is 66702439. The next prime is 66702451. The reversal of 66702445 is 54420766.

It is an interprime number because it is at equal distance from previous prime (66702439) and next prime (66702451).

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

It is not a de Polignac number, because 66702445 - 2⁵ = 66702413 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66702445.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 350971 + ... + 351160.

It is an arithmetic number, because the mean of its divisors is an integer number (10531980).

Almost surely, 2^66702445 is an apocalyptic number.

It is an amenable number.

66702445 is a deficient number, since it is larger than the sum of its proper divisors (17553395).

66702445 is a wasteful number, since it uses less digits than its factorization.

66702445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 702155.

The product of its (nonzero) digits is 40320, while the sum is 34.

The square root of 66702445 is about 8167.1564819097. The cubic root of 66702445 is about 405.5526570826.

The spelling of 66702445 in words is "sixty-six million, seven hundred two thousand, four hundred forty-five".