687601140 has 24 divisors (see below), whose sum is σ = 1925283360. Its totient is φ = 183360288.

The previous prime is 687601097. The next prime is 687601141. The reversal of 687601140 is 41106786.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (687601141) 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, 5729950 + ... + 5730069.

It is an arithmetic number, because the mean of its divisors is an integer number (80220140).

Almost surely, 2^687601140 is an apocalyptic number.

687601140 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

687601140 is an abundant number, since it is smaller than the sum of its proper divisors (1237682220).

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

687601140 is a wasteful number, since it uses less digits than its factorization.

687601140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11460031 (or 11460029 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 687601140 is about 26222.1497974518. The cubic root of 687601140 is about 882.6303616403.

The spelling of 687601140 in words is "six hundred eighty-seven million, six hundred one thousand, one hundred forty".