689263412 has 6 divisors (see below), whose sum is σ = 1206210978. Its totient is φ = 344631704.

The previous prime is 689263411. The next prime is 689263427. The reversal of 689263412 is 214362986.

It can be written as a sum of positive squares in only one way, i.e., 496220176 + 193043236 = 22276^2 + 13894^2 .

It is a super-2 number, since 2×689263412² = 950168102243763488, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 689263412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689263411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86157923 + ... + 86157930.

It is an arithmetic number, because the mean of its divisors is an integer number (201035163).

Almost surely, 2^689263412 is an apocalyptic number.

It is an amenable number.

689263412 is a deficient number, since it is larger than the sum of its proper divisors (516947566).

689263412 is a wasteful number, since it uses less digits than its factorization.

689263412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172315857 (or 172315855 counting only the distinct ones).

The product of its digits is 124416, while the sum is 41.

The square root of 689263412 is about 26253.8266163240. The cubic root of 689263412 is about 883.3410406194.

The spelling of 689263412 in words is "six hundred eighty-nine million, two hundred sixty-three thousand, four hundred twelve".