689963952 has 40 divisors (see below), whose sum is σ = 1785372336. Its totient is φ = 229605376.

The previous prime is 689963951. The next prime is 689963957. The reversal of 689963952 is 259369986.

It is a junction number, because it is equal to n+sod(n) for n = 689963892 and 689963901.

It is not an unprimeable number, because it can be changed into a prime (689963951) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17968 + ... + 41264.

Almost surely, 2^689963952 is an apocalyptic number.

It is an amenable number.

689963952 is an abundant number, since it is smaller than the sum of its proper divisors (1095408384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

689963952 is a wasteful number, since it uses less digits than its factorization.

689963952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23925 (or 23919 counting only the distinct ones).

The product of its digits is 6298560, while the sum is 57.

The square root of 689963952 is about 26267.1649022120. The cubic root of 689963952 is about 883.6402035585.

The spelling of 689963952 in words is "six hundred eighty-nine million, nine hundred sixty-three thousand, nine hundred fifty-two".