687610963 has 4 divisors (see below), whose sum is σ = 740504128. Its totient is φ = 634717800.

The previous prime is 687610949. The next prime is 687610993. The reversal of 687610963 is 369016786.

687610963 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 369016786 = 2 ⋅184508393.

It is a cyclic number.

It is not a de Polignac number, because 687610963 - 2¹³ = 687602771 is a prime.

It is not an unprimeable number, because it can be changed into a prime (687610993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26446563 + ... + 26446588.

It is an arithmetic number, because the mean of its divisors is an integer number (185126032).

Almost surely, 2^687610963 is an apocalyptic number.

687610963 is a deficient number, since it is larger than the sum of its proper divisors (52893165).

687610963 is a wasteful number, since it uses less digits than its factorization.

687610963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52893164.

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 687610963 is about 26222.3371002663. The cubic root of 687610963 is about 882.6345646762.

The spelling of 687610963 in words is "six hundred eighty-seven million, six hundred ten thousand, nine hundred sixty-three".