688382901 has 16 divisors (see below), whose sum is σ = 1073502400. Its totient is φ = 434767824.

The previous prime is 688382899. The next prime is 688382911. The reversal of 688382901 is 109283886.

It is not a de Polignac number, because 688382901 - 2¹ = 688382899 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688382911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 670426 + ... + 671451.

It is an arithmetic number, because the mean of its divisors is an integer number (67093900).

Almost surely, 2^688382901 is an apocalyptic number.

It is an amenable number.

688382901 is a deficient number, since it is larger than the sum of its proper divisors (385119499).

688382901 is a wasteful number, since it uses less digits than its factorization.

688382901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1341905 (or 1341899 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The square root of 688382901 is about 26237.0520638276. The cubic root of 688382901 is about 882.9647341036.

The spelling of 688382901 in words is "six hundred eighty-eight million, three hundred eighty-two thousand, nine hundred one".