164240906 has 4 divisors (see below), whose sum is σ = 246361362. Its totient is φ = 82120452.

The previous prime is 164240897. The next prime is 164240977. The reversal of 164240906 is 609042461.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 87590881 + 76650025 = 9359^2 + 8755^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41060225 + ... + 41060228.

Almost surely, 2^164240906 is an apocalyptic number.

164240906 is a deficient number, since it is larger than the sum of its proper divisors (82120456).

164240906 is an equidigital number, since it uses as much as digits as its factorization.

164240906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82120455.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 164240906 is about 12815.6508223344. The cubic root of 164240906 is about 547.6382542507.

The spelling of 164240906 in words is "one hundred sixty-four million, two hundred forty thousand, nine hundred six".