690491041518 has 16 divisors (see below), whose sum is σ = 1381397705856. Its totient is φ = 230094410040.

The previous prime is 690491041507. The next prime is 690491041519. The reversal of 690491041518 is 815140194096.

It is a super-2 number, since 2×690491041518² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690491041519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17296018 + ... + 17335893.

It is an arithmetic number, because the mean of its divisors is an integer number (86337356616).

Almost surely, 2^690491041518 is an apocalyptic number.

690491041518 is an abundant number, since it is smaller than the sum of its proper divisors (690906664338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

690491041518 is a wasteful number, since it uses less digits than its factorization.

690491041518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34635239.

The product of its (nonzero) digits is 311040, while the sum is 48.

The spelling of 690491041518 in words is "six hundred ninety billion, four hundred ninety-one million, forty-one thousand, five hundred eighteen".