61489995 has 16 divisors (see below), whose sum is σ = 112439040. Its totient is φ = 28109664.

The previous prime is 61489979. The next prime is 61490021. The reversal of 61489995 is 59998416.

61489995 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61489995 - 2⁴ = 61489979 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 292705 + ... + 292914.

It is an arithmetic number, because the mean of its divisors is an integer number (7027440).

Almost surely, 2^61489995 is an apocalyptic number.

61489995 is a deficient number, since it is larger than the sum of its proper divisors (50949045).

61489995 is a wasteful number, since it uses less digits than its factorization.

61489995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585634.

The product of its digits is 699840, while the sum is 51.

The square root of 61489995 is about 7841.5556492319. Note that the first 3 decimals coincide. The cubic root of 61489995 is about 394.7009326258.

It can be divided in two parts, 614 and 89995, that added together give a palindrome (90609).

The spelling of 61489995 in words is "sixty-one million, four hundred eighty-nine thousand, nine hundred ninety-five".