687420348 has 12 divisors (see below), whose sum is σ = 1603980840. Its totient is φ = 229140112.

The previous prime is 687420337. The next prime is 687420353. The reversal of 687420348 is 843024786.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×687420348² = 945093469688882208, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28642503 + ... + 28642526.

It is an arithmetic number, because the mean of its divisors is an integer number (133665070).

Almost surely, 2^687420348 is an apocalyptic number.

It is an amenable number.

687420348 is an abundant number, since it is smaller than the sum of its proper divisors (916560492).

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

687420348 is a wasteful number, since it uses less digits than its factorization.

687420348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57285036 (or 57285034 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 42.

The square root of 687420348 is about 26218.7022562140. The cubic root of 687420348 is about 882.5529977508.

The spelling of 687420348 in words is "six hundred eighty-seven million, four hundred twenty thousand, three hundred forty-eight".