61865495 has 16 divisors (see below), whose sum is σ = 75712320. Its totient is φ = 48518400.

The previous prime is 61865483. The next prime is 61865527. The reversal of 61865495 is 59456816.

It is not a de Polignac number, because 61865495 - 2¹⁰ = 61864471 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80915 + ... + 81675.

It is an arithmetic number, because the mean of its divisors is an integer number (4732020).

Almost surely, 2^61865495 is an apocalyptic number.

61865495 is a deficient number, since it is larger than the sum of its proper divisors (13846825).

61865495 is a wasteful number, since it uses less digits than its factorization.

61865495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1066.

The product of its digits is 259200, while the sum is 44.

The square root of 61865495 is about 7865.4621606108. The cubic root of 61865495 is about 395.5027407280.

The spelling of 61865495 in words is "sixty-one million, eight hundred sixty-five thousand, four hundred ninety-five".