1997608 has 16 divisors (see below), whose sum is σ = 3833280. Its totient is φ = 975408.

The previous prime is 1997599. The next prime is 1997617. The reversal of 1997608 is 8067991.

It is an interprime number because it is at equal distance from previous prime (1997599) and next prime (1997617).

It is a super-3 number, since 3×1997608³ = 23913990948893339136, which contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2560 + ... + 3247.

It is an arithmetic number, because the mean of its divisors is an integer number (239580).

2^1997608 is an apocalyptic number.

It is an amenable number.

1997608 is a deficient number, since it is larger than the sum of its proper divisors (1835672).

1997608 is a wasteful number, since it uses less digits than its factorization.

1997608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5856 (or 5852 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 1997608 is about 1413.3676096473. The cubic root of 1997608 is about 125.9418560991.

The spelling of 1997608 in words is "one million, nine hundred ninety-seven thousand, six hundred eight".