164716780 has 24 divisors (see below), whose sum is σ = 348551280. Its totient is φ = 65382720.

The previous prime is 164716771. The next prime is 164716801. The reversal of 164716780 is 87617461.

It is a super-2 number, since 2×164716780² = 54263235227136800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28815 + ... + 34054.

It is an arithmetic number, because the mean of its divisors is an integer number (14522970).

Almost surely, 2^164716780 is an apocalyptic number.

164716780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164716780 is an abundant number, since it is smaller than the sum of its proper divisors (183834500).

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

164716780 is a wasteful number, since it uses less digits than its factorization.

164716780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63009 (or 63007 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 164716780 is about 12834.2035202813. The cubic root of 164716780 is about 548.1666559382.

The spelling of 164716780 in words is "one hundred sixty-four million, seven hundred sixteen thousand, seven hundred eighty".