61010305 has 4 divisors (see below), whose sum is σ = 73212372. Its totient is φ = 48808240.

The previous prime is 61010291. The next prime is 61010317. The reversal of 61010305 is 50301016.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 42614784 + 18395521 = 6528^2 + 4289^2 .

It is not a de Polignac number, because 61010305 - 2¹⁷ = 60879233 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

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, 6101026 + ... + 6101035.

It is an arithmetic number, because the mean of its divisors is an integer number (18303093).

Almost surely, 2^61010305 is an apocalyptic number.

It is an amenable number.

61010305 is a deficient number, since it is larger than the sum of its proper divisors (12202067).

61010305 is a wasteful number, since it uses less digits than its factorization.

61010305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12202066.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 61010305 is about 7810.9093580709. The cubic root of 61010305 is about 393.6718840585.

It can be divided in two parts, 61010 and 305, that multiplied together give a triangular number (18608050 = T₆₁₀₀).

The spelling of 61010305 in words is "sixty-one million, ten thousand, three hundred five".