696321 has 6 divisors (see below), whose sum is σ = 1005810. Its totient is φ = 464208.

The previous prime is 696317. The next prime is 696323. The reversal of 696321 is 123696.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 378225 + 318096 = 615^2 + 564^2 .

It is not a de Polignac number, because 696321 - 2² = 696317 is a prime.

It is an alternating number because its digits alternate between even and odd.

696321 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (696323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 38676 + ... + 38693.

It is an arithmetic number, because the mean of its divisors is an integer number (167635).

It is a Proth number, since it is equal to 85 ⋅ 2¹³ + 1 and 85 < 2¹³.

2⁶⁹⁶³²¹ is an apocalyptic number.

It is an amenable number.

696321 is a deficient number, since it is larger than the sum of its proper divisors (309489).

696321 is a wasteful number, since it uses less digits than its factorization.

696321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77375 (or 77372 counting only the distinct ones).

The product of its digits is 1944, while the sum is 27.

The square root of 696321 is about 834.4585070571. The cubic root of 696321 is about 88.6345745380.

The spelling of 696321 in words is "six hundred ninety-six thousand, three hundred twenty-one".