61632665 has 8 divisors (see below), whose sum is σ = 74037768. Its totient is φ = 49253760.

The previous prime is 61632653. The next prime is 61632673. The reversal of 61632665 is 56623616.

61632665 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 4 ways, for example, as 104329 + 61528336 = 323^2 + 7844^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-61632665 is a prime.

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 932 + ... + 11141.

It is an arithmetic number, because the mean of its divisors is an integer number (9254721).

Almost surely, 2^61632665 is an apocalyptic number.

It is an amenable number.

61632665 is a deficient number, since it is larger than the sum of its proper divisors (12405103).

61632665 is a wasteful number, since it uses less digits than its factorization.

61632665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13099.

The product of its digits is 38880, while the sum is 35.

The square root of 61632665 is about 7850.6474255312. The cubic root of 61632665 is about 395.0059604933.

The spelling of 61632665 in words is "sixty-one million, six hundred thirty-two thousand, six hundred sixty-five".