164620436 has 6 divisors (see below), whose sum is σ = 288085770. Its totient is φ = 82310216.

The previous prime is 164620409. The next prime is 164620439. The reversal of 164620436 is 634026461.

164620436 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 163072900 + 1547536 = 12770^2 + 1244^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164620439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20577551 + ... + 20577558.

It is an arithmetic number, because the mean of its divisors is an integer number (48014295).

Almost surely, 2^164620436 is an apocalyptic number.

It is an amenable number.

164620436 is a deficient number, since it is larger than the sum of its proper divisors (123465334).

164620436 is a wasteful number, since it uses less digits than its factorization.

164620436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41155113 (or 41155111 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 164620436 is about 12830.4495634409. The cubic root of 164620436 is about 548.0597595866.

Adding to 164620436 its reverse (634026461), we get a palindrome (798646897).

The spelling of 164620436 in words is "one hundred sixty-four million, six hundred twenty thousand, four hundred thirty-six".