6666703740 has 36 divisors (see below), whose sum is σ = 20222335224. Its totient is φ = 1777787616.

The previous prime is 6666703723. The next prime is 6666703751. The reversal of 6666703740 is 473076666.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18518442 + ... + 18518801.

It is an arithmetic number, because the mean of its divisors is an integer number (561731534).

Almost surely, 2^6666703740 is an apocalyptic number.

6666703740 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6666703740 is an abundant number, since it is smaller than the sum of its proper divisors (13555631484).

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

6666703740 is a wasteful number, since it uses less digits than its factorization.

6666703740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37037258 (or 37037253 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 45.

The square root of 6666703740 is about 81649.8851193313. The cubic root of 6666703740 is about 1882.0755464898.

The spelling of 6666703740 in words is "six billion, six hundred sixty-six million, seven hundred three thousand, seven hundred forty".