2761649 has 4 divisors (see below), whose sum is σ = 3012720. Its totient is φ = 2510580.

The previous prime is 2761621. The next prime is 2761657. The reversal of 2761649 is 9461672.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2761649 - 2⁸ = 2761393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2761609) 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, 125519 + ... + 125540.

It is an arithmetic number, because the mean of its divisors is an integer number (753180).

2^2761649 is an apocalyptic number.

It is an amenable number.

2761649 is a deficient number, since it is larger than the sum of its proper divisors (251071).

2761649 is a wasteful number, since it uses less digits than its factorization.

2761649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251070.

The product of its digits is 18144, while the sum is 35.

The square root of 2761649 is about 1661.8209891562. The cubic root of 2761649 is about 140.2995118376.

The spelling of 2761649 in words is "two million, seven hundred sixty-one thousand, six hundred forty-nine".