689572 has 24 divisors (see below), whose sum is σ = 1323000. Its totient is φ = 312576.

The previous prime is 689561. The next prime is 689581. The reversal of 689572 is 275986.

It can be written as a sum of positive squares in 4 ways, for example, as 23716 + 665856 = 154^2 + 816^2 .

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4554 + ... + 4702.

It is an arithmetic number, because the mean of its divisors is an integer number (55125).

2⁶⁸⁹⁵⁷² is an apocalyptic number.

It is an amenable number.

689572 is a deficient number, since it is larger than the sum of its proper divisors (633428).

689572 is a wasteful number, since it uses less digits than its factorization.

689572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255 (or 253 counting only the distinct ones).

The product of its digits is 30240, while the sum is 37.

The square root of 689572 is about 830.4047206032. The cubic root of 689572 is about 88.3472846917.

The spelling of 689572 in words is "six hundred eighty-nine thousand, five hundred seventy-two".