162661406 has 32 divisors (see below), whose sum is σ = 268920000. Its totient is φ = 73446912.

The previous prime is 162661403. The next prime is 162661427. The reversal of 162661406 is 604166261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162661403) 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 in 15 ways as a sum of consecutive naturals, for example, 195800 + ... + 196628.

It is an arithmetic number, because the mean of its divisors is an integer number (8403750).

Almost surely, 2^162661406 is an apocalyptic number.

162661406 is a deficient number, since it is larger than the sum of its proper divisors (106258594).

162661406 is a wasteful number, since it uses less digits than its factorization.

162661406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1076.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 162661406 is about 12753.8780768831. The cubic root of 162661406 is about 545.8770559593.

The spelling of 162661406 in words is "one hundred sixty-two million, six hundred sixty-one thousand, four hundred six".