61604266 has 8 divisors (see below), whose sum is σ = 93921444. Its totient is φ = 30297120.

The previous prime is 61604237. The next prime is 61604267. The reversal of 61604266 is 66240616.

It can be written as a sum of positive squares in 2 ways, for example, as 44555625 + 17048641 = 6675^2 + 4129^2 .

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

It is not an unprimeable number, because it can be changed into a prime (61604267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 252355 + ... + 252598.

Almost surely, 2^61604266 is an apocalyptic number.

61604266 is a deficient number, since it is larger than the sum of its proper divisors (32317178).

61604266 is a wasteful number, since it uses less digits than its factorization.

61604266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505016.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 61604266 is about 7848.8385127992. The cubic root of 61604266 is about 394.9452811026.

The spelling of 61604266 in words is "sixty-one million, six hundred four thousand, two hundred sixty-six".