687407340 has 48 divisors (see below), whose sum is σ = 1926040032. Its totient is φ = 183184896.

The previous prime is 687407333. The next prime is 687407377. The reversal of 687407340 is 43704786.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116952 + ... + 122688.

It is an arithmetic number, because the mean of its divisors is an integer number (40125834).

Almost surely, 2^687407340 is an apocalyptic number.

687407340 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

687407340 is an abundant number, since it is smaller than the sum of its proper divisors (1238632692).

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

687407340 is a wasteful number, since it uses less digits than its factorization.

687407340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7746 (or 7744 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 39.

The square root of 687407340 is about 26218.4541878426. The cubic root of 687407340 is about 882.5474308892.

The spelling of 687407340 in words is "six hundred eighty-seven million, four hundred seven thousand, three hundred forty".