689482537 has 4 divisors (see below), whose sum is σ = 690031440. Its totient is φ = 688933636.

The previous prime is 689482529. The next prime is 689482553. The reversal of 689482537 is 735284986.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 689482537 - 2³ = 689482529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (689482037) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 272563 + ... + 275080.

It is an arithmetic number, because the mean of its divisors is an integer number (172507860).

Almost surely, 2^689482537 is an apocalyptic number.

It is an amenable number.

689482537 is a deficient number, since it is larger than the sum of its proper divisors (548903).

689482537 is a wasteful number, since it uses less digits than its factorization.

689482537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548902.

The product of its digits is 2903040, while the sum is 52.

The square root of 689482537 is about 26257.9994858710. Note that the first 3 decimals coincide. The cubic root of 689482537 is about 883.4346388935.

The spelling of 689482537 in words is "six hundred eighty-nine million, four hundred eighty-two thousand, five hundred thirty-seven".