61975686 has 16 divisors (see below), whose sum is σ = 125650224. Its totient is φ = 20375424.

The previous prime is 61975681. The next prime is 61975691. The reversal of 61975686 is 68657916.

61975686 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (61975681) and next prime (61975691).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61975681) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 70311 + ... + 71186.

It is an arithmetic number, because the mean of its divisors is an integer number (7853139).

Almost surely, 2^61975686 is an apocalyptic number.

61975686 is an abundant number, since it is smaller than the sum of its proper divisors (63674538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61975686 is a wasteful number, since it uses less digits than its factorization.

61975686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141575.

The product of its digits is 544320, while the sum is 48.

The square root of 61975686 is about 7872.4637820698. The cubic root of 61975686 is about 395.7374164740.

The spelling of 61975686 in words is "sixty-one million, nine hundred seventy-five thousand, six hundred eighty-six".