690075687 has 48 divisors (see below), whose sum is σ = 1117469952. Its totient is φ = 371001600.

The previous prime is 690075671. The next prime is 690075689. The reversal of 690075687 is 786570096.

It is not a de Polignac number, because 690075687 - 2⁴ = 690075671 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690075689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1720687 + ... + 1721087.

It is an arithmetic number, because the mean of its divisors is an integer number (23280624).

Almost surely, 2^690075687 is an apocalyptic number.

690075687 is a deficient number, since it is larger than the sum of its proper divisors (427394265).

690075687 is a wasteful number, since it uses less digits than its factorization.

690075687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676 (or 657 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 48.

The square root of 690075687 is about 26269.2917110454. The cubic root of 690075687 is about 883.6879008372.

The spelling of 690075687 in words is "six hundred ninety million, seventy-five thousand, six hundred eighty-seven".