690673293 has 24 divisors (see below), whose sum is σ = 1031228640. Its totient is φ = 445203360.

The previous prime is 690673261. The next prime is 690673327. The reversal of 690673293 is 392376096.

690673293 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 690673293 - 2⁵ = 690673261 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690673213) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21730 + ... + 43052.

It is an arithmetic number, because the mean of its divisors is an integer number (42967860).

Almost surely, 2^690673293 is an apocalyptic number.

It is an amenable number.

690673293 is a deficient number, since it is larger than the sum of its proper divisors (340555347).

690673293 is a wasteful number, since it uses less digits than its factorization.

690673293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21449 (or 21446 counting only the distinct ones).

The product of its (nonzero) digits is 367416, while the sum is 45.

The square root of 690673293 is about 26280.6638614781. The cubic root of 690673293 is about 883.9429186711.

The spelling of 690673293 in words is "six hundred ninety million, six hundred seventy-three thousand, two hundred ninety-three".