61344399 has 4 divisors (see below), whose sum is σ = 81792536. Its totient is φ = 40896264.

The previous prime is 61344397. The next prime is 61344403. The reversal of 61344399 is 99344316.

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

It is not a de Polignac number, because 61344399 - 2¹ = 61344397 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 (61344391) 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, 10224064 + ... + 10224069.

It is an arithmetic number, because the mean of its divisors is an integer number (20448134).

Almost surely, 2^61344399 is an apocalyptic number.

61344399 is a deficient number, since it is larger than the sum of its proper divisors (20448137).

61344399 is a wasteful number, since it uses less digits than its factorization.

61344399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20448136.

The product of its digits is 69984, while the sum is 39.

The square root of 61344399 is about 7832.2665301942. The cubic root of 61344399 is about 394.3891621585.

The spelling of 61344399 in words is "sixty-one million, three hundred forty-four thousand, three hundred ninety-nine".