197666430 has 32 divisors (see below), whose sum is σ = 510892704. Its totient is φ = 48656256.

The previous prime is 197666411. The next prime is 197666431. The reversal of 197666430 is 34666791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197666431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 253029 + ... + 253808.

It is an arithmetic number, because the mean of its divisors is an integer number (15965397).

Almost surely, 2^197666430 is an apocalyptic number.

197666430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

197666430 is an abundant number, since it is smaller than the sum of its proper divisors (313226274).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

197666430 is a wasteful number, since it uses less digits than its factorization.

197666430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506860.

The product of its (nonzero) digits is 163296, while the sum is 42.

The square root of 197666430 is about 14059.3893893014. The cubic root of 197666430 is about 582.5201771149.

The spelling of 197666430 in words is "one hundred ninety-seven million, six hundred sixty-six thousand, four hundred thirty".