164246621 has 32 divisors (see below), whose sum is σ = 217451520. Its totient is φ = 120182400.

The previous prime is 164246617. The next prime is 164246651. The reversal of 164246621 is 126642461.

164246621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 164246621 - 2² = 164246617 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164246651) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 191225 + ... + 192081.

It is an arithmetic number, because the mean of its divisors is an integer number (6795360).

Almost surely, 2^164246621 is an apocalyptic number.

164246621 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

164246621 is a deficient number, since it is larger than the sum of its proper divisors (53204899).

164246621 is a wasteful number, since it uses less digits than its factorization.

164246621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1025.

The product of its digits is 13824, while the sum is 32.

The square root of 164246621 is about 12815.8737899528. The cubic root of 164246621 is about 547.6446061322.

The spelling of 164246621 in words is "one hundred sixty-four million, two hundred forty-six thousand, six hundred twenty-one".