61070771 has 4 divisors (see below), whose sum is σ = 62560344. Its totient is φ = 59581200.

The previous prime is 61070767. The next prime is 61070791. The reversal of 61070771 is 17707016.

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

It is not a de Polignac number, because 61070771 - 2² = 61070767 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61070791) 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, 744725 + ... + 744806.

It is an arithmetic number, because the mean of its divisors is an integer number (15640086).

Almost surely, 2^61070771 is an apocalyptic number.

61070771 is a deficient number, since it is larger than the sum of its proper divisors (1489573).

61070771 is a wasteful number, since it uses less digits than its factorization.

61070771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1489572.

The product of its (nonzero) digits is 2058, while the sum is 29.

The square root of 61070771 is about 7814.7790115908. The cubic root of 61070771 is about 393.8018943612.

Adding to 61070771 its reverse (17707016), we get a palindrome (78777787).

The spelling of 61070771 in words is "sixty-one million, seventy thousand, seven hundred seventy-one".