66607316 has 12 divisors (see below), whose sum is σ = 120582420. Its totient is φ = 32155200.

The previous prime is 66607267. The next prime is 66607337. The reversal of 66607316 is 61370666.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 30846916 + 35760400 = 5554^2 + 5980^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 286985 + ... + 287216.

It is an arithmetic number, because the mean of its divisors is an integer number (10048535).

Almost surely, 2^66607316 is an apocalyptic number.

It is an amenable number.

66607316 is a deficient number, since it is larger than the sum of its proper divisors (53975104).

66607316 is a wasteful number, since it uses less digits than its factorization.

66607316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574234 (or 574232 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 66607316 is about 8161.3305287802. The cubic root of 66607316 is about 405.3597697319.

The spelling of 66607316 in words is "sixty-six million, six hundred seven thousand, three hundred sixteen".