164140623 has 12 divisors (see below), whose sum is σ = 237212248. Its totient is φ = 109371600.

The previous prime is 164140619. The next prime is 164140631. The reversal of 164140623 is 326041461.

164140623 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 164140623 - 2² = 164140619 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164140663) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22461 + ... + 28857.

Almost surely, 2^164140623 is an apocalyptic number.

164140623 is a deficient number, since it is larger than the sum of its proper divisors (73071625).

164140623 is a wasteful number, since it uses less digits than its factorization.

164140623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9254 (or 9251 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 164140623 is about 12811.7377041524. The cubic root of 164140623 is about 547.5267716940.

The spelling of 164140623 in words is "one hundred sixty-four million, one hundred forty thousand, six hundred twenty-three".