163616506 has 8 divisors (see below), whose sum is σ = 248786964. Its totient is φ = 80687520.

The previous prime is 163616501. The next prime is 163616507. The reversal of 163616506 is 605616361.

163616506 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 156375025 + 7241481 = 12505^2 + 2691^2 .

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

It is a super-2 number, since 2×163616506² = 53540722071296072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (163616501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 560185 + ... + 560476.

Almost surely, 2^163616506 is an apocalyptic number.

163616506 is a deficient number, since it is larger than the sum of its proper divisors (85170458).

163616506 is a wasteful number, since it uses less digits than its factorization.

163616506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1120736.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 163616506 is about 12791.2667863664. The cubic root of 163616506 is about 546.9433815379.

The spelling of 163616506 in words is "one hundred sixty-three million, six hundred sixteen thousand, five hundred six".