687454363 has 4 divisors (see below), whose sum is σ = 687804768. Its totient is φ = 687103960.

The previous prime is 687454351. The next prime is 687454393. The reversal of 687454363 is 363454786.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 687454363 - 2¹³ = 687446171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (687454303) by changing a digit.

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, 172243 + ... + 176188.

It is an arithmetic number, because the mean of its divisors is an integer number (171951192).

Almost surely, 2^687454363 is an apocalyptic number.

687454363 is a deficient number, since it is larger than the sum of its proper divisors (350405).

687454363 is a wasteful number, since it uses less digits than its factorization.

687454363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350404.

The product of its digits is 1451520, while the sum is 46.

The square root of 687454363 is about 26219.3509263673. The cubic root of 687454363 is about 882.5675543682.

The spelling of 687454363 in words is "six hundred eighty-seven million, four hundred fifty-four thousand, three hundred sixty-three".