61226765 has 4 divisors (see below), whose sum is σ = 73472124. Its totient is φ = 48981408.

The previous prime is 61226747. The next prime is 61226783. The reversal of 61226765 is 56762216.

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

It is an interprime number because it is at equal distance from previous prime (61226747) and next prime (61226783).

It can be written as a sum of positive squares in 2 ways, for example, as 14945956 + 46280809 = 3866^2 + 6803^2 .

It is a cyclic number.

It is not a de Polignac number, because 61226765 - 2⁶ = 61226701 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent 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, 6122672 + ... + 6122681.

It is an arithmetic number, because the mean of its divisors is an integer number (18368031).

Almost surely, 2^61226765 is an apocalyptic number.

It is an amenable number.

61226765 is a deficient number, since it is larger than the sum of its proper divisors (12245359).

61226765 is a wasteful number, since it uses less digits than its factorization.

61226765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12245358.

The product of its digits is 30240, while the sum is 35.

The square root of 61226765 is about 7824.7533507453. The cubic root of 61226765 is about 394.1369073378.

The spelling of 61226765 in words is "sixty-one million, two hundred twenty-six thousand, seven hundred sixty-five".