66677676763 has 4 divisors (see below), whose sum is σ = 66723631128. Its totient is φ = 66631722400.

The previous prime is 66677676739. The next prime is 66677676787. The reversal of 66677676763 is 36767677666.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (66677676739) and next prime (66677676787).

It is a cyclic number.

It is not a de Polignac number, because 66677676763 - 2¹³ = 66677668571 is a prime.

It is a super-2 number, since 2×66677676763² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66677676463) 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, 22975006 + ... + 22977907.

It is an arithmetic number, because the mean of its divisors is an integer number (16680907782).

Almost surely, 2^66677676763 is an apocalyptic number.

66677676763 is a deficient number, since it is larger than the sum of its proper divisors (45954365).

66677676763 is a wasteful number, since it uses less digits than its factorization.

66677676763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45954364.

The product of its digits is 336063168, while the sum is 67.

The spelling of 66677676763 in words is "sixty-six billion, six hundred seventy-seven million, six hundred seventy-six thousand, seven hundred sixty-three".