196705651 has 12 divisors (see below), whose sum is σ = 209550000. Its totient is φ = 184606128.

The previous prime is 196705643. The next prime is 196705667. The reversal of 196705651 is 156507691.

196705651 = 1289² + 1290² + ... + 1397².

It is not a de Polignac number, because 196705651 - 2³ = 196705643 is a prime.

It is a super-2 number, since 2×196705651² = 77386226270667602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (196705151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36850 + ... + 41848.

It is an arithmetic number, because the mean of its divisors is an integer number (17462500).

Almost surely, 2^196705651 is an apocalyptic number.

196705651 is a deficient number, since it is larger than the sum of its proper divisors (12844349).

196705651 is a wasteful number, since it uses less digits than its factorization.

196705651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5146 (or 5127 counting only the distinct ones).

The product of its (nonzero) digits is 56700, while the sum is 40.

The square root of 196705651 is about 14025.1791788911. The cubic root of 196705651 is about 581.5748431099.

The spelling of 196705651 in words is "one hundred ninety-six million, seven hundred five thousand, six hundred fifty-one".