689539763 has 16 divisors (see below), whose sum is σ = 772111872. Its totient is φ = 610344000.

The previous prime is 689539759. The next prime is 689539819. The reversal of 689539763 is 367935986.

It is a cyclic number.

It is not a de Polignac number, because 689539763 - 2² = 689539759 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 689539699 and 689539708.

It is not an unprimeable number, because it can be changed into a prime (689539723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 283370 + ... + 285792.

It is an arithmetic number, because the mean of its divisors is an integer number (48256992).

Almost surely, 2^689539763 is an apocalyptic number.

689539763 is a deficient number, since it is larger than the sum of its proper divisors (82572109).

689539763 is a wasteful number, since it uses less digits than its factorization.

689539763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3106.

The product of its digits is 7348320, while the sum is 56.

The square root of 689539763 is about 26259.0891502352. The cubic root of 689539763 is about 883.4590794603.

The spelling of 689539763 in words is "six hundred eighty-nine million, five hundred thirty-nine thousand, seven hundred sixty-three".