687500007 has 8 divisors (see below), whose sum is σ = 916861440. Its totient is φ = 458235960.

The previous prime is 687500003. The next prime is 687500053. The reversal of 687500007 is 700005786.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 687500007 - 2² = 687500003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (687500003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5869 + ... + 37542.

It is an arithmetic number, because the mean of its divisors is an integer number (114607680).

Almost surely, 2^687500007 is an apocalyptic number.

687500007 is a deficient number, since it is larger than the sum of its proper divisors (229361433).

687500007 is a wasteful number, since it uses less digits than its factorization.

687500007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48693.

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 687500007 is about 26220.2213377386. The cubic root of 687500007 is about 882.5870868270.

The spelling of 687500007 in words is "six hundred eighty-seven million, five hundred thousand, seven".