61636465 has 8 divisors (see below), whose sum is σ = 80687808. Its totient is φ = 44826480.

The previous prime is 61636459. The next prime is 61636483. The reversal of 61636465 is 56463616.

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

It is not a de Polignac number, because 61636465 - 2³ = 61636457 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 560277 + ... + 560386.

It is an arithmetic number, because the mean of its divisors is an integer number (10085976).

Almost surely, 2^61636465 is an apocalyptic number.

It is an amenable number.

61636465 is a deficient number, since it is larger than the sum of its proper divisors (19051343).

61636465 is a wasteful number, since it uses less digits than its factorization.

61636465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1120679.

The product of its digits is 77760, while the sum is 37.

The square root of 61636465 is about 7850.8894400571. The cubic root of 61636465 is about 395.0140784386.

The spelling of 61636465 in words is "sixty-one million, six hundred thirty-six thousand, four hundred sixty-five".