61896505 has 8 divisors (see below), whose sum is σ = 81028224. Its totient is φ = 45015600.

The previous prime is 61896431. The next prime is 61896529. The reversal of 61896505 is 50569816.

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

It is not a de Polignac number, because 61896505 - 2⁷ = 61896377 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 562641 + ... + 562750.

It is an arithmetic number, because the mean of its divisors is an integer number (10128528).

Almost surely, 2^61896505 is an apocalyptic number.

It is an amenable number.

61896505 is a deficient number, since it is larger than the sum of its proper divisors (19131719).

61896505 is a wasteful number, since it uses less digits than its factorization.

61896505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1125407.

The product of its (nonzero) digits is 64800, while the sum is 40.

The square root of 61896505 is about 7867.4331900563. The cubic root of 61896505 is about 395.5688114371.

The spelling of 61896505 in words is "sixty-one million, eight hundred ninety-six thousand, five hundred five".