697633 has 4 divisors (see below), whose sum is σ = 700308. Its totient is φ = 694960.

The previous prime is 697603. The next prime is 697637. The reversal of 697633 is 336796.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 277729 + 419904 = 527^2 + 648^2 .

It is a cyclic number.

It is not a de Polignac number, because 697633 - 2⁵ = 697601 is a prime.

It is a Duffinian number.

697633 is a lucky number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (697637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 898 + ... + 1483.

It is an arithmetic number, because the mean of its divisors is an integer number (175077).

2⁶⁹⁷⁶³³ is an apocalyptic number.

It is an amenable number.

697633 is a deficient number, since it is larger than the sum of its proper divisors (2675).

697633 is a wasteful number, since it uses less digits than its factorization.

697633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2674.

The product of its digits is 20412, while the sum is 34.

The square root of 697633 is about 835.2442756464. The cubic root of 697633 is about 88.6902076927.

The spelling of 697633 in words is "six hundred ninety-seven thousand, six hundred thirty-three".