61908799 has 4 divisors (see below), whose sum is σ = 62174736. Its totient is φ = 61642864.

The previous prime is 61908773. The next prime is 61908841. The reversal of 61908799 is 99780916.

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 61908799 - 2¹¹ = 61906751 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 (61908719) 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, 132619 + ... + 133084.

It is an arithmetic number, because the mean of its divisors is an integer number (15543684).

Almost surely, 2^61908799 is an apocalyptic number.

61908799 is a deficient number, since it is larger than the sum of its proper divisors (265937).

61908799 is a wasteful number, since it uses less digits than its factorization.

61908799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265936.

The product of its (nonzero) digits is 244944, while the sum is 49.

The square root of 61908799 is about 7868.2144734368. The cubic root of 61908799 is about 395.5949992433.

The spelling of 61908799 in words is "sixty-one million, nine hundred eight thousand, seven hundred ninety-nine".