66683701 has 4 divisors (see below), whose sum is σ = 76209952. Its totient is φ = 57157452.

The previous prime is 66683689. The next prime is 66683713. The reversal of 66683701 is 10738666.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (66683689) and next prime (66683713).

It is a cyclic number.

It is not a de Polignac number, because 66683701 - 2¹¹ = 66681653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66683761) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4763115 + ... + 4763128.

It is an arithmetic number, because the mean of its divisors is an integer number (19052488).

Almost surely, 2^66683701 is an apocalyptic number.

It is an amenable number.

66683701 is a deficient number, since it is larger than the sum of its proper divisors (9526251).

66683701 is an equidigital number, since it uses as much as digits as its factorization.

66683701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9526250.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 66683701 is about 8166.0088782710. The cubic root of 66683701 is about 405.5146655159.

The spelling of 66683701 in words is "sixty-six million, six hundred eighty-three thousand, seven hundred one".