322697421 has 12 divisors (see below), whose sum is σ = 467443548. Its totient is φ = 214520064.

The previous prime is 322697407. The next prime is 322697423. The reversal of 322697421 is 124796223.

322697421 is a `hidden beast` number, since 3 + 226 + 9 + 7 + 421 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 155900196 + 166797225 = 12486^2 + 12915^2 .

It is a de Polignac number, because none of the positive numbers 2^k-322697421 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (322697423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47610 + ... + 53963.

It is an arithmetic number, because the mean of its divisors is an integer number (38953629).

Almost surely, 2^322697421 is an apocalyptic number.

It is an amenable number.

322697421 is a deficient number, since it is larger than the sum of its proper divisors (144746127).

322697421 is a wasteful number, since it uses less digits than its factorization.

322697421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101932 (or 101929 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 322697421 is about 17963.7808102860. The cubic root of 322697421 is about 685.9068891071.

The spelling of 322697421 in words is "three hundred twenty-two million, six hundred ninety-seven thousand, four hundred twenty-one".