61728395 has 8 divisors (see below), whose sum is σ = 76076304. Its totient is φ = 48047904.

The previous prime is 61728391. The next prime is 61728413. The reversal of 61728395 is 59382716.

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

It is not a de Polignac number, because 61728395 - 2² = 61728391 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61728391) 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, 166649 + ... + 167018.

It is an arithmetic number, because the mean of its divisors is an integer number (9509538).

Almost surely, 2^61728395 is an apocalyptic number.

61728395 is a deficient number, since it is larger than the sum of its proper divisors (14347909).

61728395 is a wasteful number, since it uses less digits than its factorization.

61728395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333709.

The product of its digits is 90720, while the sum is 41.

The square root of 61728395 is about 7856.7420092555. The cubic root of 61728395 is about 395.2103670338.

The spelling of 61728395 in words is "sixty-one million, seven hundred twenty-eight thousand, three hundred ninety-five".