61439066 has 8 divisors (see below), whose sum is σ = 99247764. Its totient is φ = 28356480.

The previous prime is 61439057. The next prime is 61439087. The reversal of 61439066 is 66093416.

It can be written as a sum of positive squares in 2 ways, for example, as 60388441 + 1050625 = 7771^2 + 1025^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1181495 + ... + 1181546.

Almost surely, 2^61439066 is an apocalyptic number.

61439066 is a deficient number, since it is larger than the sum of its proper divisors (37808698).

61439066 is a wasteful number, since it uses less digits than its factorization.

61439066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2363056.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 61439066 is about 7838.3075979449. The cubic root of 61439066 is about 394.5919323671.

The spelling of 61439066 in words is "sixty-one million, four hundred thirty-nine thousand, sixty-six".