1997652 has 12 divisors (see below), whose sum is σ = 4661216. Its totient is φ = 665880.

The previous prime is 1997647. The next prime is 1997657. The reversal of 1997652 is 2567991.

It is an interprime number because it is at equal distance from previous prime (1997647) and next prime (1997657).

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×1997652² = 7981227026208, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1997652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1997657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83224 + ... + 83247.

2^1997652 is an apocalyptic number.

1997652 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1997652 is an abundant number, since it is smaller than the sum of its proper divisors (2663564).

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

1997652 is a wasteful number, since it uses less digits than its factorization.

1997652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166478 (or 166476 counting only the distinct ones).

The product of its digits is 34020, while the sum is 39.

The square root of 1997652 is about 1413.3831752218. The cubic root of 1997652 is about 125.9427807718.

The spelling of 1997652 in words is "one million, nine hundred ninety-seven thousand, six hundred fifty-two".