689270477 has 8 divisors (see below), whose sum is σ = 791271936. Its totient is φ = 588152592.

The previous prime is 689270443. The next prime is 689270489. The reversal of 689270477 is 774072986.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 689270477 - 2⁸ = 689270221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689272477) 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, 219218 + ... + 222339.

It is an arithmetic number, because the mean of its divisors is an integer number (98908992).

Almost surely, 2^689270477 is an apocalyptic number.

It is an amenable number.

689270477 is a deficient number, since it is larger than the sum of its proper divisors (102001459).

689270477 is a wasteful number, since it uses less digits than its factorization.

689270477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441787.

The product of its (nonzero) digits is 1185408, while the sum is 50.

The square root of 689270477 is about 26253.9611677933. The cubic root of 689270477 is about 883.3440587124.

The spelling of 689270477 in words is "six hundred eighty-nine million, two hundred seventy thousand, four hundred seventy-seven".