66383679 has 16 divisors (see below), whose sum is σ = 91587584. Its totient is φ = 42724800.

The previous prime is 66383671. The next prime is 66383687. The reversal of 66383679 is 97638366.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (66383671) and next prime (66383687).

It is not a de Polignac number, because 66383679 - 2³ = 66383671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66383671) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63747 + ... + 64779.

It is an arithmetic number, because the mean of its divisors is an integer number (5724224).

Almost surely, 2^66383679 is an apocalyptic number.

66383679 is a deficient number, since it is larger than the sum of its proper divisors (25203905).

66383679 is a wasteful number, since it uses less digits than its factorization.

66383679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1758.

The product of its digits is 979776, while the sum is 48.

The square root of 66383679 is about 8147.6179954635. The cubic root of 66383679 is about 404.9055899431.

The spelling of 66383679 in words is "sixty-six million, three hundred eighty-three thousand, six hundred seventy-nine".