164240646 has 16 divisors (see below), whose sum is σ = 328793904. Its totient is φ = 54694784.

The previous prime is 164240633. The next prime is 164240707. The reversal of 164240646 is 646042461.

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, 5895 + ... + 19058.

It is an arithmetic number, because the mean of its divisors is an integer number (20549619).

Almost surely, 2^164240646 is an apocalyptic number.

164240646 is an abundant number, since it is smaller than the sum of its proper divisors (164553258).

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

164240646 is a wasteful number, since it uses less digits than its factorization.

164240646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26055.

The product of its (nonzero) digits is 27648, while the sum is 33.

The square root of 164240646 is about 12815.6406784835. The cubic root of 164240646 is about 547.6379652727.

The spelling of 164240646 in words is "one hundred sixty-four million, two hundred forty thousand, six hundred forty-six".