66070302677 has 16 divisors (see below), whose sum is σ = 68599281072. Its totient is φ = 63589294080.

The previous prime is 66070302643. The next prime is 66070302691. The reversal of 66070302677 is 77620307066.

It can be written as a sum of positive squares in 8 ways, for example, as 45713005636 + 20357297041 = 213806^2 + 142679^2 .

It is a cyclic number.

It is not a de Polignac number, because 66070302677 - 2¹⁶ = 66070237141 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 (66070302607) 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, 1218263 + ... + 1271339.

It is an arithmetic number, because the mean of its divisors is an integer number (4287455067).

Almost surely, 2^66070302677 is an apocalyptic number.

It is an amenable number.

66070302677 is a deficient number, since it is larger than the sum of its proper divisors (2528978395).

66070302677 is a wasteful number, since it uses less digits than its factorization.

66070302677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53528.

The product of its (nonzero) digits is 444528, while the sum is 44.

The spelling of 66070302677 in words is "sixty-six billion, seventy million, three hundred two thousand, six hundred seventy-seven".