688045075 has 12 divisors (see below), whose sum is σ = 864865528. Its totient is φ = 542894400.

The previous prime is 688045073. The next prime is 688045103. The reversal of 688045075 is 570540886.

It is not a de Polignac number, because 688045075 - 2¹ = 688045073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (688045073) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 186681 + ... + 190330.

Almost surely, 2^688045075 is an apocalyptic number.

688045075 is a deficient number, since it is larger than the sum of its proper divisors (176820453).

688045075 is a wasteful number, since it uses less digits than its factorization.

688045075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377094 (or 377089 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 43.

The square root of 688045075 is about 26230.6133172673. The cubic root of 688045075 is about 882.8202712606.

The spelling of 688045075 in words is "six hundred eighty-eight million, forty-five thousand, seventy-five".