2997649 has 4 divisors (see below), whose sum is σ = 3155440. Its totient is φ = 2839860.

The previous prime is 2997641. The next prime is 2997653. The reversal of 2997649 is 9467992.

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 2997649 - 2³ = 2997641 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2997599 and 2997608.

It is not an unprimeable number, because it can be changed into a prime (2997641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78867 + ... + 78904.

It is an arithmetic number, because the mean of its divisors is an integer number (788860).

2^2997649 is an apocalyptic number.

It is an amenable number.

2997649 is a deficient number, since it is larger than the sum of its proper divisors (157791).

2997649 is a wasteful number, since it uses less digits than its factorization.

2997649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157790.

The product of its digits is 244944, while the sum is 46.

The square root of 2997649 is about 1731.3719993115. The cubic root of 2997649 is about 144.1872724212.

The spelling of 2997649 in words is "two million, nine hundred ninety-seven thousand, six hundred forty-nine".