77666006 has 16 divisors (see below), whose sum is σ = 128701440. Its totient is φ = 34855080.

The previous prime is 77666003. The next prime is 77666011. The reversal of 77666006 is 60066677.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77666003) 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, 20606 + ... + 24081.

It is an arithmetic number, because the mean of its divisors is an integer number (8043840).

Almost surely, 2^77666006 is an apocalyptic number.

77666006 is a deficient number, since it is larger than the sum of its proper divisors (51035434).

77666006 is a wasteful number, since it uses less digits than its factorization.

77666006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44779.

The product of its (nonzero) digits is 63504, while the sum is 38.

The square root of 77666006 is about 8812.8318944594. The cubic root of 77666006 is about 426.6551484792.

The spelling of 77666006 in words is "seventy-seven million, six hundred sixty-six thousand, six".