197611020 has 72 divisors (see below), whose sum is σ = 630979440. Its totient is φ = 49921920.

The previous prime is 197611013. The next prime is 197611027. The reversal of 197611020 is 20116791.

197611020 = 1395² + 1396² + ... + 1489².

197611020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (197611013) and next prime (197611027).

It is not an unprimeable number, because it can be changed into a prime (197611027) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25471 + ... + 32310.

Almost surely, 2^197611020 is an apocalyptic number.

197611020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

197611020 is an abundant number, since it is smaller than the sum of its proper divisors (433368420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

197611020 is a wasteful number, since it uses less digits than its factorization.

197611020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57815 (or 57810 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 27.

The square root of 197611020 is about 14057.4186819629. The cubic root of 197611020 is about 582.4657411990.

It can be divided in two parts, 1976 and 11020, that added together give a square (12996 = 114²).

The spelling of 197611020 in words is "one hundred ninety-seven million, six hundred eleven thousand, twenty".