2649381 has 24 divisors (see below), whose sum is σ = 4186080. Its totient is φ = 1485792.

The previous prime is 2649371. The next prime is 2649391. The reversal of 2649381 is 1839462.

It is an interprime number because it is at equal distance from previous prime (2649371) and next prime (2649391).

It is not a de Polignac number, because 2649381 - 2¹⁵ = 2616613 is a prime.

It is a super-2 number, since 2×2649381² = 14038439366322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2649371) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9715 + ... + 9983.

It is an arithmetic number, because the mean of its divisors is an integer number (174420).

2^2649381 is an apocalyptic number.

2649381 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2649381 is a deficient number, since it is larger than the sum of its proper divisors (1536699).

2649381 is a wasteful number, since it uses less digits than its factorization.

2649381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353 (or 346 counting only the distinct ones).

The product of its digits is 10368, while the sum is 33.

The square root of 2649381 is about 1627.6919241675. The cubic root of 2649381 is about 138.3719748182.

The spelling of 2649381 in words is "two million, six hundred forty-nine thousand, three hundred eighty-one".