66963487970 has 8 divisors (see below), whose sum is σ = 120534278364. Its totient is φ = 26785395184.

The previous prime is 66963487967. The next prime is 66963488021. The reversal of 66963487970 is 7978436966.

It can be written as a sum of positive squares in 2 ways, for example, as 66764875321 + 198612649 = 258389^2 + 14093^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×66963487970² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66963487897 and 66963487906.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3348174389 + ... + 3348174408.

Almost surely, 2^66963487970 is an apocalyptic number.

66963487970 is a deficient number, since it is larger than the sum of its proper divisors (53570790394).

66963487970 is a wasteful number, since it uses less digits than its factorization.

66963487970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6696348804.

The product of its (nonzero) digits is 82301184, while the sum is 65.

The spelling of 66963487970 in words is "sixty-six billion, nine hundred sixty-three million, four hundred eighty-seven thousand, nine hundred seventy".