164065406 has 4 divisors (see below), whose sum is σ = 246098112. Its totient is φ = 82032702.

The previous prime is 164065403. The next prime is 164065409. The reversal of 164065406 is 604560461.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (164065403) and next prime (164065409).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164065403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41016350 + ... + 41016353.

It is an arithmetic number, because the mean of its divisors is an integer number (61524528).

Almost surely, 2^164065406 is an apocalyptic number.

164065406 is a deficient number, since it is larger than the sum of its proper divisors (82032706).

164065406 is an equidigital number, since it uses as much as digits as its factorization.

164065406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82032705.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 164065406 is about 12808.8018955717. The cubic root of 164065406 is about 547.4431246911.

It can be divided in two parts, 16406 and 5406, that added together give a palindrome (21812).

The spelling of 164065406 in words is "one hundred sixty-four million, sixty-five thousand, four hundred six".