164697406 has 4 divisors (see below), whose sum is σ = 247046112. Its totient is φ = 82348702.

The previous prime is 164697373. The next prime is 164697413. The reversal of 164697406 is 604796461.

164697406 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 604796461 = 22003 ⋅27487.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41174350 + ... + 41174353.

It is an arithmetic number, because the mean of its divisors is an integer number (61761528).

Almost surely, 2^164697406 is an apocalyptic number.

164697406 is a deficient number, since it is larger than the sum of its proper divisors (82348706).

164697406 is an equidigital number, since it uses as much as digits as its factorization.

164697406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82348705.

The product of its (nonzero) digits is 217728, while the sum is 43.

The square root of 164697406 is about 12833.4487180960. The cubic root of 164697406 is about 548.1451632945.

The spelling of 164697406 in words is "one hundred sixty-four million, six hundred ninety-seven thousand, four hundred six".