61912465 has 4 divisors (see below), whose sum is σ = 74294964. Its totient is φ = 49529968.

The previous prime is 61912463. The next prime is 61912511. The reversal of 61912465 is 56421916.

61912465 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 40094224 + 21818241 = 6332^2 + 4671^2 .

It is a cyclic number.

It is not a de Polignac number, because 61912465 - 2¹ = 61912463 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 61912465.

It is not an unprimeable number, because it can be changed into a prime (61912463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6191242 + ... + 6191251.

It is an arithmetic number, because the mean of its divisors is an integer number (18573741).

Almost surely, 2^61912465 is an apocalyptic number.

It is an amenable number.

61912465 is a deficient number, since it is larger than the sum of its proper divisors (12382499).

61912465 is a wasteful number, since it uses less digits than its factorization.

61912465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12382498.

The product of its digits is 12960, while the sum is 34.

The square root of 61912465 is about 7868.4474326261. The cubic root of 61912465 is about 395.6028076252.

The spelling of 61912465 in words is "sixty-one million, nine hundred twelve thousand, four hundred sixty-five".