1617996 has 24 divisors (see below), whose sum is σ = 3813040. Its totient is φ = 533952.

The previous prime is 1617989. The next prime is 1618003. The reversal of 1617996 is 6997161.

It is an interprime number because it is at equal distance from previous prime (1617989) and next prime (1618003).

It is a super-2 number, since 2×1617996² = 5235822112032, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 690 + ... + 1926.

2^1617996 is an apocalyptic number.

It is an amenable number.

1617996 is an abundant number, since it is smaller than the sum of its proper divisors (2195044).

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

1617996 is a wasteful number, since it uses less digits than its factorization.

1617996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1353 (or 1351 counting only the distinct ones).

The product of its digits is 20412, while the sum is 39.

The square root of 1617996 is about 1272.0047169724. The cubic root of 1617996 is about 117.3975808894.

The spelling of 1617996 in words is "one million, six hundred seventeen thousand, nine hundred ninety-six".