320696421 has 32 divisors (see below), whose sum is σ = 461260800. Its totient is φ = 197588160.

The previous prime is 320696417. The next prime is 320696437. The reversal of 320696421 is 124696023.

It is not a de Polignac number, because 320696421 - 2² = 320696417 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320696401) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 440760 + ... + 441486.

It is an arithmetic number, because the mean of its divisors is an integer number (14414400).

Almost surely, 2^320696421 is an apocalyptic number.

It is an amenable number.

320696421 is a deficient number, since it is larger than the sum of its proper divisors (140564379).

320696421 is a wasteful number, since it uses less digits than its factorization.

320696421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 929.

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 320696421 is about 17907.9987994192. The cubic root of 320696421 is about 684.4862121306.

The spelling of 320696421 in words is "three hundred twenty million, six hundred ninety-six thousand, four hundred twenty-one".