161067740 has 24 divisors (see below), whose sum is σ = 349907040. Its totient is φ = 62205248.

The previous prime is 161067727. The next prime is 161067757. The reversal of 161067740 is 47760161.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 161067697 and 161067706.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138272 + ... + 139431.

It is an arithmetic number, because the mean of its divisors is an integer number (14579460).

Almost surely, 2^161067740 is an apocalyptic number.

161067740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161067740 is an abundant number, since it is smaller than the sum of its proper divisors (188839300).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161067740 is a wasteful number, since it uses less digits than its factorization.

161067740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277741 (or 277739 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 161067740 is about 12691.2465896775. The cubic root of 161067740 is about 544.0884687073.

The spelling of 161067740 in words is "one hundred sixty-one million, sixty-seven thousand, seven hundred forty".