61261799 has 8 divisors (see below), whose sum is σ = 63871632. Its totient is φ = 58705920.

The previous prime is 61261793. The next prime is 61261801. The reversal of 61261799 is 99716216.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61261799 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 (61261793) 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 7 ways as a sum of consecutive naturals, for example, 11162 + ... + 15719.

It is an arithmetic number, because the mean of its divisors is an integer number (7983954).

Almost surely, 2^61261799 is an apocalyptic number.

61261799 is a deficient number, since it is larger than the sum of its proper divisors (2609833).

61261799 is a wasteful number, since it uses less digits than its factorization.

61261799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26977.

The product of its digits is 40824, while the sum is 41.

The square root of 61261799 is about 7826.9916954089. The cubic root of 61261799 is about 394.2120681468.

The spelling of 61261799 in words is "sixty-one million, two hundred sixty-one thousand, seven hundred ninety-nine".