6691672040 has 32 divisors (see below), whose sum is σ = 15406411680. Its totient is φ = 2614420032.

The previous prime is 6691672027. The next prime is 6691672051. The reversal of 6691672040 is 402761966.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1943534 + ... + 1946973.

It is an arithmetic number, because the mean of its divisors is an integer number (481450365).

Almost surely, 2^6691672040 is an apocalyptic number.

It is an amenable number.

6691672040 is an abundant number, since it is smaller than the sum of its proper divisors (8714739640).

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

6691672040 is a wasteful number, since it uses less digits than its factorization.

6691672040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3890561 (or 3890557 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 6691672040 is about 81802.6407886689. The cubic root of 6691672040 is about 1884.4222175976.

The spelling of 6691672040 in words is "six billion, six hundred ninety-one million, six hundred seventy-two thousand, forty".