696421 has 4 divisors (see below), whose sum is σ = 759744. Its totient is φ = 633100.

The previous prime is 696413. The next prime is 696427. The reversal of 696421 is 124696.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 696421 - 2³ = 696413 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 696421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (696427) 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, 31645 + ... + 31666.

It is an arithmetic number, because the mean of its divisors is an integer number (189936).

2⁶⁹⁶⁴²¹ is an apocalyptic number.

It is an amenable number.

696421 is a deficient number, since it is larger than the sum of its proper divisors (63323).

696421 is a wasteful number, since it uses less digits than its factorization.

696421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63322.

The product of its digits is 2592, while the sum is 28.

The square root of 696421 is about 834.5184240027. The cubic root of 696421 is about 88.6388173289.

The spelling of 696421 in words is "six hundred ninety-six thousand, four hundred twenty-one".