66738485 has 8 divisors (see below), whose sum is σ = 87366816. Its totient is φ = 48537040.

The previous prime is 66738473. The next prime is 66738493. The reversal of 66738485 is 58483766.

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

It is not a de Polignac number, because 66738485 - 2⁸ = 66738229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 606659 + ... + 606768.

It is an arithmetic number, because the mean of its divisors is an integer number (10920852).

Almost surely, 2^66738485 is an apocalyptic number.

It is an amenable number.

66738485 is a deficient number, since it is larger than the sum of its proper divisors (20628331).

66738485 is a wasteful number, since it uses less digits than its factorization.

66738485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1213443.

The product of its digits is 967680, while the sum is 47.

The square root of 66738485 is about 8169.3625822337. The cubic root of 66738485 is about 405.6256853209.

The spelling of 66738485 in words is "sixty-six million, seven hundred thirty-eight thousand, four hundred eighty-five".