688151136 has 48 divisors (see below), whose sum is σ = 1818558000. Its totient is φ = 227839488.

The previous prime is 688151131. The next prime is 688151153. The reversal of 688151136 is 631151886.

It is a tau number, because it is divible by the number of its divisors (48).

It is a junction number, because it is equal to n+sod(n) for n = 688151094 and 688151103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688151131) 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, 9751 + ... + 38358.

It is an arithmetic number, because the mean of its divisors is an integer number (37886625).

Almost surely, 2^688151136 is an apocalyptic number.

It is an amenable number.

688151136 is an abundant number, since it is smaller than the sum of its proper divisors (1130406864).

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

688151136 is a wasteful number, since it uses less digits than its factorization.

688151136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48271 (or 48263 counting only the distinct ones).

The product of its digits is 34560, while the sum is 39.

The square root of 688151136 is about 26232.6349419954. The cubic root of 688151136 is about 882.8656306871.

The spelling of 688151136 in words is "six hundred eighty-eight million, one hundred fifty-one thousand, one hundred thirty-six".