689830954 has 4 divisors (see below), whose sum is σ = 1034746434. Its totient is φ = 344915476.

The previous prime is 689830949. The next prime is 689830963. The reversal of 689830954 is 459038986.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 621355329 + 68475625 = 24927^2 + 8275^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172457737 + ... + 172457740.

Almost surely, 2^689830954 is an apocalyptic number.

689830954 is a deficient number, since it is larger than the sum of its proper divisors (344915480).

689830954 is a wasteful number, since it uses less digits than its factorization.

689830954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344915479.

The product of its (nonzero) digits is 1866240, while the sum is 52.

The square root of 689830954 is about 26264.6331404038. The cubic root of 689830954 is about 883.5834228472.

The spelling of 689830954 in words is "six hundred eighty-nine million, eight hundred thirty thousand, nine hundred fifty-four".