61665476 has 12 divisors (see below), whose sum is σ = 110546940. Its totient is φ = 30080640.

The previous prime is 61665473. The next prime is 61665497. The reversal of 61665476 is 67456616.

61665476 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 23522500 + 38142976 = 4850^2 + 6176^2 .

It is a Harshad number since it is a multiple of its sum of digits (41).

It is not an unprimeable number, because it can be changed into a prime (61665473) 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, 187841 + ... + 188168.

It is an arithmetic number, because the mean of its divisors is an integer number (9212245).

Almost surely, 2^61665476 is an apocalyptic number.

It is an amenable number.

61665476 is a deficient number, since it is larger than the sum of its proper divisors (48881464).

61665476 is a wasteful number, since it uses less digits than its factorization.

61665476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376054 (or 376052 counting only the distinct ones).

The product of its digits is 181440, while the sum is 41.

The square root of 61665476 is about 7852.7368477493. The cubic root of 61665476 is about 395.0760436834.

The spelling of 61665476 in words is "sixty-one million, six hundred sixty-five thousand, four hundred seventy-six".