6666637452 has 12 divisors (see below), whose sum is σ = 15555487416. Its totient is φ = 2222212480.

The previous prime is 6666637447. The next prime is 6666637457. The reversal of 6666637452 is 2547366666.

It is an interprime number because it is at equal distance from previous prime (6666637447) and next prime (6666637457).

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 6666637395 and 6666637404.

It is not an unprimeable number, because it can be changed into a prime (6666637457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 277776549 + ... + 277776572.

It is an arithmetic number, because the mean of its divisors is an integer number (1296290618).

Almost surely, 2^6666637452 is an apocalyptic number.

It is an amenable number.

6666637452 is an abundant number, since it is smaller than the sum of its proper divisors (8888849964).

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

6666637452 is a wasteful number, since it uses less digits than its factorization.

6666637452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555553128 (or 555553126 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 51.

The square root of 6666637452 is about 81649.4791900108. The cubic root of 6666637452 is about 1882.0693085527.

The spelling of 6666637452 in words is "six billion, six hundred sixty-six million, six hundred thirty-seven thousand, four hundred fifty-two".