163245406 has 32 divisors (see below), whose sum is σ = 259290720. Its totient is φ = 76991616.

The previous prime is 163245403. The next prime is 163245413. The reversal of 163245406 is 604542361.

163245406 = 444² + 445² + ... + 832².

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163245403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 419460 + ... + 419848.

It is an arithmetic number, because the mean of its divisors is an integer number (8102835).

Almost surely, 2^163245406 is an apocalyptic number.

163245406 is a deficient number, since it is larger than the sum of its proper divisors (96045314).

163245406 is a wasteful number, since it uses less digits than its factorization.

163245406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 163245406 is about 12776.7525608035. The cubic root of 163245406 is about 546.5295595247.

Adding to 163245406 its reverse (604542361), we get a palindrome (767787767).

The spelling of 163245406 in words is "one hundred sixty-three million, two hundred forty-five thousand, four hundred six".