197787056 has 20 divisors (see below), whose sum is σ = 383439000. Its totient is φ = 98835072.

The previous prime is 197787053. The next prime is 197787059. The reversal of 197787056 is 650787791.

It is an interprime number because it is at equal distance from previous prime (197787053) and next prime (197787059).

It is a super-2 number, since 2×197787056² = 78239439042294272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 197786995 and 197787013.

It is not an unprimeable number, because it can be changed into a prime (197787053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40220 + ... + 44868.

It is an arithmetic number, because the mean of its divisors is an integer number (19171950).

Almost surely, 2^197787056 is an apocalyptic number.

197787056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

197787056 is a deficient number, since it is larger than the sum of its proper divisors (185651944).

197787056 is a wasteful number, since it uses less digits than its factorization.

197787056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7316 (or 7310 counting only the distinct ones).

The product of its (nonzero) digits is 740880, while the sum is 50.

The square root of 197787056 is about 14063.6786083869. The cubic root of 197787056 is about 582.6386473920.

The spelling of 197787056 in words is "one hundred ninety-seven million, seven hundred eighty-seven thousand, fifty-six".