687073307 has 32 divisors (see below), whose sum is σ = 783129600. Its totient is φ = 599816448.

The previous prime is 687073297. The next prime is 687073327. The reversal of 687073307 is 703370786.

It is a cyclic number.

It is not a de Polignac number, because 687073307 - 2¹⁰ = 687072283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (687073327) 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, 1113263 + ... + 1113879.

It is an arithmetic number, because the mean of its divisors is an integer number (24472800).

Almost surely, 2^687073307 is an apocalyptic number.

687073307 is a deficient number, since it is larger than the sum of its proper divisors (96056293).

687073307 is a wasteful number, since it uses less digits than its factorization.

687073307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 755.

The product of its (nonzero) digits is 148176, while the sum is 41.

The square root of 687073307 is about 26212.0832251082. The cubic root of 687073307 is about 882.4044551441.

The spelling of 687073307 in words is "six hundred eighty-seven million, seventy-three thousand, three hundred seven".