196409661 has 8 divisors (see below), whose sum is σ = 299290944. Its totient is φ = 112234080.

The previous prime is 196409659. The next prime is 196409671. The reversal of 196409661 is 166904691.

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

It is not a de Polignac number, because 196409661 - 2¹ = 196409659 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196409611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4676400 + ... + 4676441.

It is an arithmetic number, because the mean of its divisors is an integer number (37411368).

Almost surely, 2^196409661 is an apocalyptic number.

It is an amenable number.

196409661 is a deficient number, since it is larger than the sum of its proper divisors (102881283).

196409661 is an equidigital number, since it uses as much as digits as its factorization.

196409661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9352851.

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 196409661 is about 14014.6231130202. The cubic root of 196409661 is about 581.2829912133.

The spelling of 196409661 in words is "one hundred ninety-six million, four hundred nine thousand, six hundred sixty-one".