61766841 has 4 divisors (see below), whose sum is σ = 82355792. Its totient is φ = 41177892.

The previous prime is 61766827. The next prime is 61766843. The reversal of 61766841 is 14866716.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 61766841 - 2¹¹ = 61764793 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 61766841.

It is not an unprimeable number, because it can be changed into a prime (61766843) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 10294471 + ... + 10294476.

It is an arithmetic number, because the mean of its divisors is an integer number (20588948).

Almost surely, 2^61766841 is an apocalyptic number.

It is an amenable number.

61766841 is a deficient number, since it is larger than the sum of its proper divisors (20588951).

61766841 is a wasteful number, since it uses less digits than its factorization.

61766841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20588950.

The product of its digits is 48384, while the sum is 39.

The square root of 61766841 is about 7859.1883168684. The cubic root of 61766841 is about 395.2923989977.

The spelling of 61766841 in words is "sixty-one million, seven hundred sixty-six thousand, eight hundred forty-one".