1996965 has 24 divisors (see below), whose sum is σ = 3494400. Its totient is φ = 1054944.

The previous prime is 1996949. The next prime is 1996979. The reversal of 1996965 is 5696991.

1996965 = T₃₀ + T₃₁ + ... + T₂₂₈.

It is not a de Polignac number, because 1996965 - 2⁴ = 1996949 is a prime.

It is a super-2 number, since 2×1996965² = 7975738422450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1996965.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8844 + ... + 9066.

It is an arithmetic number, because the mean of its divisors is an integer number (145600).

2^1996965 is an apocalyptic number.

1996965 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1996965 is a deficient number, since it is larger than the sum of its proper divisors (1497435).

1996965 is a wasteful number, since it uses less digits than its factorization.

1996965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433 (or 430 counting only the distinct ones).

The product of its digits is 131220, while the sum is 45.

The square root of 1996965 is about 1413.1401204410. The cubic root of 1996965 is about 125.9283417186.

The spelling of 1996965 in words is "one million, nine hundred ninety-six thousand, nine hundred sixty-five".