61765383 has 4 divisors (see below), whose sum is σ = 82353848. Its totient is φ = 41176920.

The previous prime is 61765381. The next prime is 61765387. The reversal of 61765383 is 38356716.

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

It is not a de Polignac number, because 61765383 - 2¹ = 61765381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61765381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10294228 + ... + 10294233.

It is an arithmetic number, because the mean of its divisors is an integer number (20588462).

Almost surely, 2^61765383 is an apocalyptic number.

61765383 is a deficient number, since it is larger than the sum of its proper divisors (20588465).

61765383 is a wasteful number, since it uses less digits than its factorization.

61765383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20588464.

The product of its digits is 90720, while the sum is 39.

The square root of 61765383 is about 7859.0955586505. The cubic root of 61765383 is about 395.2892886943.

The spelling of 61765383 in words is "sixty-one million, seven hundred sixty-five thousand, three hundred eighty-three".