2764381 has 4 divisors (see below), whose sum is σ = 2839132. Its totient is φ = 2689632.

The previous prime is 2764373. The next prime is 2764423. The reversal of 2764381 is 1834672.

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 2576025 + 188356 = 1605^2 + 434^2 .

It is a cyclic number.

It is not a de Polignac number, because 2764381 - 2³ = 2764373 is a prime.

It is a super-2 number, since 2×2764381² = 15283604626322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2764331) 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, 37320 + ... + 37393.

It is an arithmetic number, because the mean of its divisors is an integer number (709783).

2^2764381 is an apocalyptic number.

It is an amenable number.

2764381 is a deficient number, since it is larger than the sum of its proper divisors (74751).

2764381 is an equidigital number, since it uses as much as digits as its factorization.

2764381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74750.

The product of its digits is 8064, while the sum is 31.

The square root of 2764381 is about 1662.6427758241. The cubic root of 2764381 is about 140.3457610099.

The spelling of 2764381 in words is "two million, seven hundred sixty-four thousand, three hundred eighty-one".