61898975 has 6 divisors (see below), whose sum is σ = 76754760. Its totient is φ = 49519160.

The previous prime is 61898951. The next prime is 61898987. The reversal of 61898975 is 57989816.

61898975 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 61898975 - 2⁸ = 61898719 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 (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1237955 + ... + 1238004.

It is an arithmetic number, because the mean of its divisors is an integer number (12792460).

Almost surely, 2^61898975 is an apocalyptic number.

61898975 is a deficient number, since it is larger than the sum of its proper divisors (14855785).

61898975 is a wasteful number, since it uses less digits than its factorization.

61898975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2475969 (or 2475964 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 53.

The square root of 61898975 is about 7867.5901647201. The cubic root of 61898975 is about 395.5740731341.

It can be divided in two parts, 6 and 1898975, that added together give a palindrome (1898981).

The spelling of 61898975 in words is "sixty-one million, eight hundred ninety-eight thousand, nine hundred seventy-five".