195680747 has 8 divisors (see below), whose sum is σ = 197223936. Its totient is φ = 194142312.

The previous prime is 195680731. The next prime is 195680839. The reversal of 195680747 is 747086591.

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

It is a cyclic number.

It is not a de Polignac number, because 195680747 - 2⁴ = 195680731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (195680347) 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, 146798 + ... + 148124.

It is an arithmetic number, because the mean of its divisors is an integer number (24652992).

Almost surely, 2^195680747 is an apocalyptic number.

195680747 is a deficient number, since it is larger than the sum of its proper divisors (1543189).

195680747 is a wasteful number, since it uses less digits than its factorization.

195680747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2377.

The product of its (nonzero) digits is 423360, while the sum is 47.

The square root of 195680747 is about 13988.5934603876. The cubic root of 195680747 is about 580.5630155223.

The spelling of 195680747 in words is "one hundred ninety-five million, six hundred eighty thousand, seven hundred forty-seven".