687144063 has 32 divisors (see below), whose sum is σ = 1027296000. Its totient is φ = 405997056.

The previous prime is 687144053. The next prime is 687144079. The reversal of 687144063 is 360441786.

It is not a de Polignac number, because 687144063 - 2¹³ = 687135871 is a prime.

It is a super-2 number, since 2×687144063² = 944333926632295938, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (687144043) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 165588 + ... + 169686.

It is an arithmetic number, because the mean of its divisors is an integer number (32103000).

Almost surely, 2^687144063 is an apocalyptic number.

687144063 is a deficient number, since it is larger than the sum of its proper divisors (340151937).

687144063 is a wasteful number, since it uses less digits than its factorization.

687144063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4311.

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 687144063 is about 26213.4328732427. The cubic root of 687144063 is about 882.4347446178.

The spelling of 687144063 in words is "six hundred eighty-seven million, one hundred forty-four thousand, sixty-three".