402326661 has 8 divisors (see below), whose sum is σ = 585202464. Its totient is φ = 243834320.

The previous prime is 402326651. The next prime is 402326677. The reversal of 402326661 is 166623204.

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 402326661 - 2⁶ = 402326597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402326611) 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, 6095826 + ... + 6095891.

It is an arithmetic number, because the mean of its divisors is an integer number (73150308).

Almost surely, 2^402326661 is an apocalyptic number.

It is an amenable number.

402326661 is a deficient number, since it is larger than the sum of its proper divisors (182875803).

402326661 is a wasteful number, since it uses less digits than its factorization.

402326661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12191731.

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 402326661 is about 20058.0821864903. The cubic root of 402326661 is about 738.2321208575.

Adding to 402326661 its reverse (166623204), we get a palindrome (568949865).

The spelling of 402326661 in words is "four hundred two million, three hundred twenty-six thousand, six hundred sixty-one".