687277740 has 24 divisors (see below), whose sum is σ = 1924377840. Its totient is φ = 183274048.

The previous prime is 687277687. The next prime is 687277753. The reversal of 687277740 is 47772786.

687277740 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 687277740.

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, 5727255 + ... + 5727374.

It is an arithmetic number, because the mean of its divisors is an integer number (80182410).

Almost surely, 2^687277740 is an apocalyptic number.

687277740 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

687277740 is an abundant number, since it is smaller than the sum of its proper divisors (1237100100).

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

687277740 is a wasteful number, since it uses less digits than its factorization.

687277740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11454641 (or 11454639 counting only the distinct ones).

The product of its (nonzero) digits is 921984, while the sum is 48.

The square root of 687277740 is about 26215.9825297470. The cubic root of 687277740 is about 882.4919638567.

It can be divided in two parts, 68727 and 7740, that added together give a palindrome (76467).

The spelling of 687277740 in words is "six hundred eighty-seven million, two hundred seventy-seven thousand, seven hundred forty".