61168949 has 4 divisors (see below), whose sum is σ = 62470464. Its totient is φ = 59867436.

The previous prime is 61168931. The next prime is 61168957. The reversal of 61168949 is 94986116.

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 a de Polignac number, because none of the positive numbers 2^k-61168949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61168969) 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, 650687 + ... + 650780.

It is an arithmetic number, because the mean of its divisors is an integer number (15617616).

Almost surely, 2^61168949 is an apocalyptic number.

It is an amenable number.

61168949 is a deficient number, since it is larger than the sum of its proper divisors (1301515).

61168949 is a wasteful number, since it uses less digits than its factorization.

61168949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1301514.

The product of its digits is 93312, while the sum is 44.

The square root of 61168949 is about 7821.0580486274. The cubic root of 61168949 is about 394.0128080387.

The spelling of 61168949 in words is "sixty-one million, one hundred sixty-eight thousand, nine hundred forty-nine".