2991365 has 8 divisors (see below), whose sum is σ = 3865848. Its totient is φ = 2208960.

The previous prime is 2991361. The next prime is 2991367. The reversal of 2991365 is 5631992.

It can be written as a sum of positive squares in 4 ways, for example, as 564001 + 2427364 = 751^2 + 1558^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2991365 - 2² = 2991361 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2991361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22946 + ... + 23075.

It is an arithmetic number, because the mean of its divisors is an integer number (483231).

2^2991365 is an apocalyptic number.

It is an amenable number.

2991365 is a deficient number, since it is larger than the sum of its proper divisors (874483).

2991365 is a wasteful number, since it uses less digits than its factorization.

2991365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46039.

The product of its digits is 14580, while the sum is 35.

The square root of 2991365 is about 1729.5563014831. The cubic root of 2991365 is about 144.0864482203.

The spelling of 2991365 in words is "two million, nine hundred ninety-one thousand, three hundred sixty-five".