61008799 has 4 divisors (see below), whose sum is σ = 61029864. Its totient is φ = 60987736.

The previous prime is 61008769. The next prime is 61008817. The reversal of 61008799 is 99780016.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61008799 - 2¹⁹ = 60484511 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 (61008709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5332 + ... + 12265.

It is an arithmetic number, because the mean of its divisors is an integer number (15257466).

Almost surely, 2^61008799 is an apocalyptic number.

61008799 is a deficient number, since it is larger than the sum of its proper divisors (21065).

61008799 is a wasteful number, since it uses less digits than its factorization.

61008799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21064.

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 61008799 is about 7810.8129538480. The cubic root of 61008799 is about 393.6686448531.

The spelling of 61008799 in words is "sixty-one million, eight thousand, seven hundred ninety-nine".