689377536 has 81 divisors (see below), whose sum is σ = 1991285751. Its totient is φ = 229372416.

The previous prime is 689377477. The next prime is 689377537. The reversal of 689377536 is 635773986.

The square root of 689377536 is 26256.

It is a perfect power (a square), and thus also a powerful number.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (689377537) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1260015 + ... + 1260561.

Almost surely, 2^689377536 is an apocalyptic number.

689377536 is the 26256-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 689377536

689377536 is an abundant number, since it is smaller than the sum of its proper divisors (1301908215).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

689377536 is an frugal number, since it uses more digits than its factorization.

689377536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1116 (or 552 counting only the distinct ones).

The product of its digits is 5715360, while the sum is 54.

The cubic root of 689377536 is about 883.3897906560.

It can be divided in two parts, 689 and 377536, that added together give a square (378225 = 615²).

The spelling of 689377536 in words is "six hundred eighty-nine million, three hundred seventy-seven thousand, five hundred thirty-six".