689270954 has 4 divisors (see below), whose sum is σ = 1033906434. Its totient is φ = 344635476.

The previous prime is 689270947. The next prime is 689270963. The reversal of 689270954 is 459072986.

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., 636199729 + 53071225 = 25223^2 + 7285^2 .

It is a Curzon number.

It is an unprimeable number.

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, 172317737 + ... + 172317740.

Almost surely, 2^689270954 is an apocalyptic number.

689270954 is a deficient number, since it is larger than the sum of its proper divisors (344635480).

689270954 is a wasteful number, since it uses less digits than its factorization.

689270954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344635479.

The product of its (nonzero) digits is 1088640, while the sum is 50.

The square root of 689270954 is about 26253.9702521352. The cubic root of 689270954 is about 883.3442624810.

The spelling of 689270954 in words is "six hundred eighty-nine million, two hundred seventy thousand, nine hundred fifty-four".