164400663 has 8 divisors (see below), whose sum is σ = 250515328. Its totient is φ = 93943224.

The previous prime is 164400661. The next prime is 164400679. The reversal of 164400663 is 366004461.

164400663 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 164400663 - 2¹ = 164400661 is a prime.

It is a super-3 number, since 3×164400663³ (a number of 26 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 164400663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164400661) 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, 3914281 + ... + 3914322.

It is an arithmetic number, because the mean of its divisors is an integer number (31314416).

Almost surely, 2^164400663 is an apocalyptic number.

164400663 is a deficient number, since it is larger than the sum of its proper divisors (86114665).

164400663 is an equidigital number, since it uses as much as digits as its factorization.

164400663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7828613.

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

The square root of 164400663 is about 12821.8821941242. The cubic root of 164400663 is about 547.8157591432.

The spelling of 164400663 in words is "one hundred sixty-four million, four hundred thousand, six hundred sixty-three".