197671653 has 12 divisors (see below), whose sum is σ = 290365920. Its totient is φ = 129547176.

The previous prime is 197671601. The next prime is 197671657. The reversal of 197671653 is 356176791.

It is not a de Polignac number, because 197671653 - 2⁹ = 197671141 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 197671599 and 197671608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197671657) 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, 185601 + ... + 186662.

It is an arithmetic number, because the mean of its divisors is an integer number (24197160).

Almost surely, 2^197671653 is an apocalyptic number.

It is an amenable number.

197671653 is a deficient number, since it is larger than the sum of its proper divisors (92694267).

197671653 is a wasteful number, since it uses less digits than its factorization.

197671653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372328 (or 372325 counting only the distinct ones).

The product of its digits is 238140, while the sum is 45.

The square root of 197671653 is about 14059.5751358283. The cubic root of 197671653 is about 582.5253077721.

It can be divided in two parts, 19767165 and 3, that multiplied together give a triangular number (59301495 = T₁₀₈₉₀).

The spelling of 197671653 in words is "one hundred ninety-seven million, six hundred seventy-one thousand, six hundred fifty-three".