61210265 has 8 divisors (see below), whose sum is σ = 73768968. Its totient is φ = 48757120.

The previous prime is 61210241. The next prime is 61210277. The reversal of 61210265 is 56201216.

It can be written as a sum of positive squares in 4 ways, for example, as 14684224 + 46526041 = 3832^2 + 6821^2 .

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

It is not a de Polignac number, because 61210265 - 2¹² = 61206169 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61210265.

It is an unprimeable number.

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, 25106 + ... + 27435.

It is an arithmetic number, because the mean of its divisors is an integer number (9221121).

Almost surely, 2^61210265 is an apocalyptic number.

It is an amenable number.

61210265 is a deficient number, since it is larger than the sum of its proper divisors (12558703).

61210265 is a wasteful number, since it uses less digits than its factorization.

61210265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52779.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 61210265 is about 7823.6989333690. The cubic root of 61210265 is about 394.1014988404.

The spelling of 61210265 in words is "sixty-one million, two hundred ten thousand, two hundred sixty-five".