66704036737070 has 32 divisors (see below), whose sum is σ = 125956918365120. Its totient is φ = 25398720148480.

The previous prime is 66704036737067. The next prime is 66704036737073. The reversal of 66704036737070 is 7073763040766.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (66704036737067) and next prime (66704036737073).

It is a junction number, because it is equal to n+sod(n) for n = 66704036736997 and 66704036737015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66704036737073) 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, 1619795747 + ... + 1619836926.

It is an arithmetic number, because the mean of its divisors is an integer number (3936153698910).

Almost surely, 2^{66704036737070} is an apocalyptic number.

66704036737070 is a deficient number, since it is larger than the sum of its proper divisors (59252881628050).

66704036737070 is a wasteful number, since it uses less digits than its factorization.

66704036737070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3239632780.

The product of its (nonzero) digits is 18670176, while the sum is 56.

The spelling of 66704036737070 in words is "sixty-six trillion, seven hundred four billion, thirty-six million, seven hundred thirty-seven thousand, seventy".