660828371 has 8 divisors (see below), whose sum is σ = 761180160. Its totient is φ = 561963528.

The previous prime is 660828367. The next prime is 660828419. The reversal of 660828371 is 173828066.

It is a happy number.

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

It is not a de Polignac number, because 660828371 - 2² = 660828367 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (660828071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 370781 + ... + 372558.

It is an arithmetic number, because the mean of its divisors is an integer number (95147520).

Almost surely, 2^660828371 is an apocalyptic number.

660828371 is a deficient number, since it is larger than the sum of its proper divisors (100351789).

660828371 is a wasteful number, since it uses less digits than its factorization.

660828371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743473.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 660828371 is about 25706.5822504665. The cubic root of 660828371 is about 871.0228736354.

The spelling of 660828371 in words is "six hundred sixty million, eight hundred twenty-eight thousand, three hundred seventy-one".