689497 has 8 divisors (see below), whose sum is σ = 719712. Its totient is φ = 660000.

The previous prime is 689467. The next prime is 689509. The reversal of 689497 is 794986.

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 689497 - 2⁷ = 689369 is a prime.

It is a super-2 number, since 2×689497² = 950812226018, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (689467) 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, 2622 + ... + 2872.

It is an arithmetic number, because the mean of its divisors is an integer number (89964).

2⁶⁸⁹⁴⁹⁷ is an apocalyptic number.

689497 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

It is an amenable number.

689497 is a deficient number, since it is larger than the sum of its proper divisors (30215).

689497 is a wasteful number, since it uses less digits than its factorization.

689497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359.

The product of its digits is 108864, while the sum is 43.

The square root of 689497 is about 830.3595606724. The cubic root of 689497 is about 88.3440816002.

The spelling of 689497 in words is "six hundred eighty-nine thousand, four hundred ninety-seven".