61965799 has 8 divisors (see below), whose sum is σ = 74983968. Its totient is φ = 49989120.

The previous prime is 61965793. The next prime is 61965809. The reversal of 61965799 is 99756916.

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 61965799 - 2¹⁹ = 61441511 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 (61965793) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 260242 + ... + 260479.

It is an arithmetic number, because the mean of its divisors is an integer number (9372996).

Almost surely, 2^61965799 is an apocalyptic number.

61965799 is a deficient number, since it is larger than the sum of its proper divisors (13018169).

61965799 is a wasteful number, since it uses less digits than its factorization.

61965799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520745.

The product of its digits is 918540, while the sum is 52.

The square root of 61965799 is about 7871.8358087552. The cubic root of 61965799 is about 395.7163713182.

The spelling of 61965799 in words is "sixty-one million, nine hundred sixty-five thousand, seven hundred ninety-nine".