164661756 has 36 divisors (see below), whose sum is σ = 446940648. Its totient is φ = 47046048.

The previous prime is 164661751. The next prime is 164661787. The reversal of 164661756 is 657166461.

It is a happy number.

164661756 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×164661756² = 54226987778007072, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164661751) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 139431 + ... + 140606.

It is an arithmetic number, because the mean of its divisors is an integer number (12415018).

Almost surely, 2^164661756 is an apocalyptic number.

It is an amenable number.

164661756 is an abundant number, since it is smaller than the sum of its proper divisors (282278892).

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

164661756 is a wasteful number, since it uses less digits than its factorization.

164661756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280058 (or 280049 counting only the distinct ones).

The product of its digits is 181440, while the sum is 42.

The square root of 164661756 is about 12832.0596943749. The cubic root of 164661756 is about 548.1056103841.

The spelling of 164661756 in words is "one hundred sixty-four million, six hundred sixty-one thousand, seven hundred fifty-six".