61886953 has 4 divisors (see below), whose sum is σ = 65527380. Its totient is φ = 58246528.

The previous prime is 61886939. The next prime is 61886969. The reversal of 61886953 is 35968816.

61886953 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 30437289 + 31449664 = 5517^2 + 5608^2 .

It is a cyclic number.

It is not a de Polignac number, because 61886953 - 2²¹ = 59789801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61886983) 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 3 ways as a sum of consecutive naturals, for example, 1820188 + ... + 1820221.

It is an arithmetic number, because the mean of its divisors is an integer number (16381845).

Almost surely, 2^61886953 is an apocalyptic number.

It is an amenable number.

61886953 is a deficient number, since it is larger than the sum of its proper divisors (3640427).

61886953 is a wasteful number, since it uses less digits than its factorization.

61886953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3640426.

The product of its digits is 311040, while the sum is 46.

The square root of 61886953 is about 7866.8261071413. The cubic root of 61886953 is about 395.5484620508.

It can be divided in two parts, 618 and 86953, that added together give a triangular number (87571 = T₄₁₈).

The spelling of 61886953 in words is "sixty-one million, eight hundred eighty-six thousand, nine hundred fifty-three".