61859895 has 16 divisors (see below), whose sum is σ = 100090080. Its totient is φ = 32620544.

The previous prime is 61859873. The next prime is 61859899. The reversal of 61859895 is 59895816.

It is a cyclic number.

It is not a de Polignac number, because 61859895 - 2¹¹ = 61857847 is a prime.

It is a super-2 number, since 2×61859895² = 7653293218822050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61859899) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 21834 + ... + 24503.

It is an arithmetic number, because the mean of its divisors is an integer number (6255630).

Almost surely, 2^61859895 is an apocalyptic number.

61859895 is a deficient number, since it is larger than the sum of its proper divisors (38230185).

61859895 is a wasteful number, since it uses less digits than its factorization.

61859895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46434.

The product of its digits is 777600, while the sum is 51.

The square root of 61859895 is about 7865.1061658442. The cubic root of 61859895 is about 395.4908068696.

The spelling of 61859895 in words is "sixty-one million, eight hundred fifty-nine thousand, eight hundred ninety-five".