689773739 has 16 divisors (see below), whose sum is σ = 746995200. Its totient is φ = 634850784.

The previous prime is 689773723. The next prime is 689773751. The reversal of 689773739 is 937377986.

689773739 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 689773739 - 2⁴ = 689773723 is a prime.

It is a super-2 number, since 2×689773739² = 951575622028080242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (689773769) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121349 + ... + 126905.

It is an arithmetic number, because the mean of its divisors is an integer number (46687200).

Almost surely, 2^689773739 is an apocalyptic number.

689773739 is a deficient number, since it is larger than the sum of its proper divisors (57221461).

689773739 is a wasteful number, since it uses less digits than its factorization.

689773739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5762.

The product of its digits is 12002256, while the sum is 59.

The square root of 689773739 is about 26263.5439154734. The cubic root of 689773739 is about 883.5589938558.

The spelling of 689773739 in words is "six hundred eighty-nine million, seven hundred seventy-three thousand, seven hundred thirty-nine".