6161649 has 8 divisors (see below), whose sum is σ = 8847552. Its totient is φ = 3791760.

The previous prime is 6161641. The next prime is 6161651. The reversal of 6161649 is 9461616.

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

It is not a de Polignac number, because 6161649 - 2³ = 6161641 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6161641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78957 + ... + 79034.

It is an arithmetic number, because the mean of its divisors is an integer number (1105944).

Almost surely, 2^6161649 is an apocalyptic number.

It is an amenable number.

6161649 is a deficient number, since it is larger than the sum of its proper divisors (2685903).

6161649 is a wasteful number, since it uses less digits than its factorization.

6161649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158007.

The product of its digits is 7776, while the sum is 33.

The square root of 6161649 is about 2482.2669074860. The cubic root of 6161649 is about 183.3294849514.

Subtracting from 6161649 its sum of digits (33), we obtain a palindrome (6161616).

The spelling of 6161649 in words is "six million, one hundred sixty-one thousand, six hundred forty-nine".