197723623 has 2 divisors, whose sum is σ = 197723624. Its totient is φ = 197723622.

The previous prime is 197723621. The next prime is 197723627. The reversal of 197723623 is 326327791.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 197723623 - 2¹ = 197723621 is a prime.

It is a super-2 number, since 2×197723623² = 78189262184492258, which contains 22 as substring.

Together with 197723621, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197723621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98861811 + 98861812.

It is an arithmetic number, because the mean of its divisors is an integer number (98861812).

Almost surely, 2^197723623 is an apocalyptic number.

197723623 is a deficient number, since it is larger than the sum of its proper divisors (1).

197723623 is an equidigital number, since it uses as much as digits as its factorization.

197723623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 95256, while the sum is 40.

The square root of 197723623 is about 14061.4232209972. The cubic root of 197723623 is about 582.5763540182.

It can be divided in two parts, 1977 and 23623, that added together give a square (25600 = 160²).

The spelling of 197723623 in words is "one hundred ninety-seven million, seven hundred twenty-three thousand, six hundred twenty-three".