61044665 has 8 divisors (see below), whose sum is σ = 79913088. Its totient is φ = 44396080.

The previous prime is 61044661. The next prime is 61044727. The reversal of 61044665 is 56644016.

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

It is not a de Polignac number, because 61044665 - 2² = 61044661 is a prime.

It is a super-2 number, since 2×61044665² = 7452902249924450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61044661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 554897 + ... + 555006.

It is an arithmetic number, because the mean of its divisors is an integer number (9989136).

Almost surely, 2^61044665 is an apocalyptic number.

It is an amenable number.

61044665 is a deficient number, since it is larger than the sum of its proper divisors (18868423).

61044665 is a wasteful number, since it uses less digits than its factorization.

61044665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1109919.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 61044665 is about 7813.1085362997. The cubic root of 61044665 is about 393.7457733652.

The spelling of 61044665 in words is "sixty-one million, forty-four thousand, six hundred sixty-five".