66607701 has 8 divisors (see below), whose sum is σ = 92671680. Its totient is φ = 42474432.

The previous prime is 66607679. The next prime is 66607741. The reversal of 66607701 is 10770666.

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

It is not a de Polignac number, because 66607701 - 2⁷ = 66607573 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66607741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 482596 + ... + 482733.

It is an arithmetic number, because the mean of its divisors is an integer number (11583960).

Almost surely, 2^66607701 is an apocalyptic number.

It is an amenable number.

66607701 is a deficient number, since it is larger than the sum of its proper divisors (26063979).

66607701 is a wasteful number, since it uses less digits than its factorization.

66607701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 965355.

The product of its (nonzero) digits is 10584, while the sum is 33.

The square root of 66607701 is about 8161.3541155865. The cubic root of 66607701 is about 405.3605507432.

The spelling of 66607701 in words is "sixty-six million, six hundred seven thousand, seven hundred one".