197477642 has 8 divisors (see below), whose sum is σ = 296284932. Its totient is φ = 98716000.

The previous prime is 197477641. The next prime is 197477669. The reversal of 197477642 is 246774791.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 127938721 + 69538921 = 11311^2 + 8339^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (197477641) 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, 3092 + ... + 20112.

Almost surely, 2^197477642 is an apocalyptic number.

197477642 is a deficient number, since it is larger than the sum of its proper divisors (98807290).

197477642 is a wasteful number, since it uses less digits than its factorization.

197477642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22824.

The product of its digits is 592704, while the sum is 47.

The square root of 197477642 is about 14052.6738380993. The cubic root of 197477642 is about 582.3346661864.

The spelling of 197477642 in words is "one hundred ninety-seven million, four hundred seventy-seven thousand, six hundred forty-two".