402146663 has 8 divisors (see below), whose sum is σ = 421317120. Its totient is φ = 383363640.

The previous prime is 402146659. The next prime is 402146677. The reversal of 402146663 is 366641204.

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 402146663 - 2² = 402146659 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402146623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94733 + ... + 98886.

It is an arithmetic number, because the mean of its divisors is an integer number (52664640).

Almost surely, 2^402146663 is an apocalyptic number.

402146663 is a deficient number, since it is larger than the sum of its proper divisors (19170457).

402146663 is a wasteful number, since it uses less digits than its factorization.

402146663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193717.

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 402146663 is about 20053.5947650290. The cubic root of 402146663 is about 738.1220112214.

Adding to 402146663 its reverse (366641204), we get a palindrome (768787867).

The spelling of 402146663 in words is "four hundred two million, one hundred forty-six thousand, six hundred sixty-three".