1997707260 has 48 divisors (see below), whose sum is σ = 5615388576. Its totient is φ = 530644992.

The previous prime is 1997707181. The next prime is 1997707289. The reversal of 1997707260 is 627077991.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 49357 + ... + 80196.

It is an arithmetic number, because the mean of its divisors is an integer number (116987262).

Almost surely, 2^1997707260 is an apocalyptic number.

1997707260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1997707260 is an abundant number, since it is smaller than the sum of its proper divisors (3617681316).

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

1997707260 is a wasteful number, since it uses less digits than its factorization.

1997707260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129822 (or 129820 counting only the distinct ones).

The product of its (nonzero) digits is 333396, while the sum is 48.

The square root of 1997707260 is about 44695.7185869072. The cubic root of 1997707260 is about 1259.4394205748.

The spelling of 1997707260 in words is "one billion, nine hundred ninety-seven million, seven hundred seven thousand, two hundred sixty".