689812046 has 32 divisors (see below), whose sum is σ = 1300734720. Its totient is φ = 268750680.

The previous prime is 689812027. The next prime is 689812049. The reversal of 689812046 is 640218986.

It is a happy number.

689812046 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×689812046² = 951681317613412232, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 689811988 and 689812006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689812049) 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, 125 + ... + 37143.

It is an arithmetic number, because the mean of its divisors is an integer number (40647960).

Almost surely, 2^689812046 is an apocalyptic number.

689812046 is a deficient number, since it is larger than the sum of its proper divisors (610922674).

689812046 is a wasteful number, since it uses less digits than its factorization.

689812046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37061 (or 37039 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 44.

The square root of 689812046 is about 26264.2731862125. The cubic root of 689812046 is about 883.5753498800.

The spelling of 689812046 in words is "six hundred eighty-nine million, eight hundred twelve thousand, forty-six".