196999761 has 64 divisors (see below), whose sum is σ = 330301440. Its totient is φ = 101977920.

The previous prime is 196999741. The next prime is 196999783. The reversal of 196999761 is 167999691.

It is not a de Polignac number, because 196999761 - 2⁹ = 196999249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (196999741) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 883296 + ... + 883518.

It is an arithmetic number, because the mean of its divisors is an integer number (5160960).

Almost surely, 2^196999761 is an apocalyptic number.

It is an amenable number.

196999761 is a deficient number, since it is larger than the sum of its proper divisors (133301679).

196999761 is a wasteful number, since it uses less digits than its factorization.

196999761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346.

The product of its digits is 1653372, while the sum is 57.

The square root of 196999761 is about 14035.6603335931. The cubic root of 196999761 is about 581.8645514439.

The spelling of 196999761 in words is "one hundred ninety-six million, nine hundred ninety-nine thousand, seven hundred sixty-one".