2671690649 has 8 divisors (see below), whose sum is σ = 2797708992. Its totient is φ = 2546493840.

The previous prime is 2671690633. The next prime is 2671690657. The reversal of 2671690649 is 9460961762.

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

It is a cyclic number.

It is not a de Polignac number, because 2671690649 - 2⁴ = 2671690633 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2671690597 and 2671690606.

It is not an unprimeable number, because it can be changed into a prime (2671690669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198722 + ... + 211739.

It is an arithmetic number, because the mean of its divisors is an integer number (349713624).

Almost surely, 2^2671690649 is an apocalyptic number.

It is an amenable number.

2671690649 is a deficient number, since it is larger than the sum of its proper divisors (126018343).

2671690649 is a wasteful number, since it uses less digits than its factorization.

2671690649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410767.

The product of its (nonzero) digits is 979776, while the sum is 50.

The square root of 2671690649 is about 51688.3995592822. The cubic root of 2671690649 is about 1387.5928610739.

The spelling of 2671690649 in words is "two billion, six hundred seventy-one million, six hundred ninety thousand, six hundred forty-nine".