690069728349 has 32 divisors (see below), whose sum is σ = 1024230512000. Its totient is φ = 459189751680.

The previous prime is 690069728339. The next prime is 690069728399. The reversal of 690069728349 is 943827960096.

690069728349 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 690069728349 - 2³¹ = 687922244701 is a prime.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690069728329) 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, 73150137 + ... + 73159569.

It is an arithmetic number, because the mean of its divisors is an integer number (32007203500).

Almost surely, 2^690069728349 is an apocalyptic number.

It is an amenable number.

690069728349 is a deficient number, since it is larger than the sum of its proper divisors (334160783651).

690069728349 is a wasteful number, since it uses less digits than its factorization.

690069728349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14202 (or 14196 counting only the distinct ones).

The product of its (nonzero) digits is 35271936, while the sum is 63.

The spelling of 690069728349 in words is "six hundred ninety billion, sixty-nine million, seven hundred twenty-eight thousand, three hundred forty-nine".