697500 has 90 divisors (see below), whose sum is σ = 2274272. Its totient is φ = 180000.

The previous prime is 697481. The next prime is 697507. The reversal of 697500 is 5796.

It is a tau number, because it is divible by the number of its divisors (90).

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (697507) by changing a digit.

697500 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 22485 + ... + 22515.

2⁶⁹⁷⁵⁰⁰ is an apocalyptic number.

697500 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 697500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1137136).

697500 is an abundant number, since it is smaller than the sum of its proper divisors (1576772).

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

697500 is a wasteful number, since it uses less digits than its factorization.

697500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61 (or 41 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 27.

The square root of 697500 is about 835.1646544245. The cubic root of 697500 is about 88.6845712299.

Subtracting from 697500 its product of nonzero digits (1890), we obtain a triangular number (695610 = T₁₁₇₉).

It can be divided in two parts, 69 and 7500, that added together give a square (7569 = 87²).

The spelling of 697500 in words is "six hundred ninety-seven thousand, five hundred".