61805465 has 4 divisors (see below), whose sum is σ = 74166564. Its totient is φ = 49444368.

The previous prime is 61805449. The next prime is 61805477. The reversal of 61805465 is 56450816.

It is a happy number.

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 12581209 + 49224256 = 3547^2 + 7016^2 .

It is a cyclic number.

It is not a de Polignac number, because 61805465 - 2⁴ = 61805449 is a prime.

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, 6180542 + ... + 6180551.

It is an arithmetic number, because the mean of its divisors is an integer number (18541641).

Almost surely, 2^61805465 is an apocalyptic number.

It is an amenable number.

61805465 is a deficient number, since it is larger than the sum of its proper divisors (12361099).

61805465 is a wasteful number, since it uses less digits than its factorization.

61805465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12361098.

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 61805465 is about 7861.6451840566. The cubic root of 61805465 is about 395.3747764895.

The spelling of 61805465 in words is "sixty-one million, eight hundred five thousand, four hundred sixty-five".