161624206 has 4 divisors (see below), whose sum is σ = 242436312. Its totient is φ = 80812102.

The previous prime is 161624161. The next prime is 161624207. The reversal of 161624206 is 602426161.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×161624206² = 52244767930260872, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161624207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40406050 + ... + 40406053.

It is an arithmetic number, because the mean of its divisors is an integer number (60609078).

Almost surely, 2^161624206 is an apocalyptic number.

161624206 is a deficient number, since it is larger than the sum of its proper divisors (80812106).

161624206 is an equidigital number, since it uses as much as digits as its factorization.

161624206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80812105.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 161624206 is about 12713.1509076232. The cubic root of 161624206 is about 544.7143311128.

The spelling of 161624206 in words is "one hundred sixty-one million, six hundred twenty-four thousand, two hundred six".