66714440670 has 80 divisors (see below), whose sum is σ = 180379207008. Its totient is φ = 17692188480.

The previous prime is 66714440647. The next prime is 66714440677. The reversal of 66714440670 is 7604441766.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66714440677) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 80914 + ... + 374133.

Almost surely, 2^66714440670 is an apocalyptic number.

66714440670 is an abundant number, since it is smaller than the sum of its proper divisors (113664766338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66714440670 is a wasteful number, since it uses less digits than its factorization.

66714440670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455247 (or 455238 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 45.

The spelling of 66714440670 in words is "sixty-six billion, seven hundred fourteen million, four hundred forty thousand, six hundred seventy".