66316877 has 4 divisors (see below), whose sum is σ = 72345696. Its totient is φ = 60288060.

The previous prime is 66316871. The next prime is 66316883. The reversal of 66316877 is 77861366.

It is a happy number.

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 (66316871) and next prime (66316883).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66316877 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 (66316871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3014393 + ... + 3014414.

It is an arithmetic number, because the mean of its divisors is an integer number (18086424).

Almost surely, 2^66316877 is an apocalyptic number.

It is an amenable number.

66316877 is a deficient number, since it is larger than the sum of its proper divisors (6028819).

66316877 is a wasteful number, since it uses less digits than its factorization.

66316877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6028818.

The product of its digits is 254016, while the sum is 44.

The square root of 66316877 is about 8143.5174832501. The cubic root of 66316877 is about 404.7697253165.

The spelling of 66316877 in words is "sixty-six million, three hundred sixteen thousand, eight hundred seventy-seven".