196747690 has 32 divisors (see below), whose sum is σ = 359879760. Its totient is φ = 77435904.

The previous prime is 196747657. The next prime is 196747699. The reversal of 196747690 is 96747691.

196747690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 439569 + 196308121 = 663^2 + 14011^2 .

It is a super-2 number, since 2×196747690² = 77419307040672200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (196747699) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 176856 + ... + 177964.

Almost surely, 2^196747690 is an apocalyptic number.

196747690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

196747690 is a deficient number, since it is larger than the sum of its proper divisors (163132070).

196747690 is a wasteful number, since it uses less digits than its factorization.

196747690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1386.

The product of its (nonzero) digits is 571536, while the sum is 49.

The square root of 196747690 is about 14026.6777962567. The cubic root of 196747690 is about 581.6162706324.

Subtracting from 196747690 its reverse (96747691), we obtain a palindrome (99999999).

The spelling of 196747690 in words is "one hundred ninety-six million, seven hundred forty-seven thousand, six hundred ninety".