322920661 has 8 divisors (see below), whose sum is σ = 390761280. Its totient is φ = 260507328.

The previous prime is 322920659. The next prime is 322920671. The reversal of 322920661 is 166029223.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 322920661 - 2¹ = 322920659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (322920601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1356691 + ... + 1356928.

It is an arithmetic number, because the mean of its divisors is an integer number (48845160).

Almost surely, 2^322920661 is an apocalyptic number.

It is an amenable number.

322920661 is a deficient number, since it is larger than the sum of its proper divisors (67840619).

322920661 is a wasteful number, since it uses less digits than its factorization.

322920661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2713643.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 322920661 is about 17969.9933500266. The cubic root of 322920661 is about 686.0650213056.

Adding to 322920661 its reverse (166029223), we get a palindrome (488949884).

The spelling of 322920661 in words is "three hundred twenty-two million, nine hundred twenty thousand, six hundred sixty-one".