164877397 has 4 divisors (see below), whose sum is σ = 165352896. Its totient is φ = 164401900.

The previous prime is 164877343. The next prime is 164877403. The reversal of 164877397 is 793778461.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164877397 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 (164877197) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 237229 + ... + 237922.

It is an arithmetic number, because the mean of its divisors is an integer number (41338224).

Almost surely, 2^164877397 is an apocalyptic number.

It is an amenable number.

164877397 is a deficient number, since it is larger than the sum of its proper divisors (475499).

164877397 is an equidigital number, since it uses as much as digits as its factorization.

164877397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475498.

The product of its digits is 1778112, while the sum is 52.

The square root of 164877397 is about 12840.4593765176. The cubic root of 164877397 is about 548.3447723419.

The spelling of 164877397 in words is "one hundred sixty-four million, eight hundred seventy-seven thousand, three hundred ninety-seven".