1011965 has 4 divisors (see below), whose sum is σ = 1214364. Its totient is φ = 809568.

The previous prime is 1011961. The next prime is 1011973. The reversal of 1011965 is 5691101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 241081 + 770884 = 491^2 + 878^2 .

It is a cyclic number.

It is not a de Polignac number, because 1011965 - 2² = 1011961 is a prime.

It is a super-2 number, since 2×1011965² = 2048146322450, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1011965.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101192 + ... + 101201.

It is an arithmetic number, because the mean of its divisors is an integer number (303591).

2^1011965 is an apocalyptic number.

It is an amenable number.

1011965 is a deficient number, since it is larger than the sum of its proper divisors (202399).

1011965 is an equidigital number, since it uses as much as digits as its factorization.

1011965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202398.

The product of its (nonzero) digits is 270, while the sum is 23.

The square root of 1011965 is about 1005.9647111107. The cubic root of 1011965 is about 100.3972531431.

The spelling of 1011965 in words is "one million, eleven thousand, nine hundred sixty-five".