61408065 has 8 divisors (see below), whose sum is σ = 98252928. Its totient is φ = 32750960.

The previous prime is 61408021. The next prime is 61408069. The reversal of 61408065 is 56080416.

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

It is not a de Polignac number, because 61408065 - 2⁶ = 61408001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61408069) 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, 2046921 + ... + 2046950.

It is an arithmetic number, because the mean of its divisors is an integer number (12281616).

Almost surely, 2^61408065 is an apocalyptic number.

It is an amenable number.

61408065 is a deficient number, since it is larger than the sum of its proper divisors (36844863).

61408065 is a wasteful number, since it uses less digits than its factorization.

61408065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4093879.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 61408065 is about 7836.3298169487. The cubic root of 61408065 is about 394.5255533060.

The spelling of 61408065 in words is "sixty-one million, four hundred eight thousand, sixty-five".