61071793 has 4 divisors (see below), whose sum is σ = 62722420. Its totient is φ = 59421168.

The previous prime is 61071779. The next prime is 61071809. The reversal of 61071793 is 39717016.

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 56130064 + 4941729 = 7492^2 + 2223^2 .

It is a cyclic number.

It is not a de Polignac number, because 61071793 - 2⁵ = 61071761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61071713) 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, 825258 + ... + 825331.

It is an arithmetic number, because the mean of its divisors is an integer number (15680605).

Almost surely, 2^61071793 is an apocalyptic number.

It is an amenable number.

61071793 is a deficient number, since it is larger than the sum of its proper divisors (1650627).

61071793 is a wasteful number, since it uses less digits than its factorization.

61071793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1650626.

The product of its (nonzero) digits is 7938, while the sum is 34.

The square root of 61071793 is about 7814.8444002424. The cubic root of 61071793 is about 393.8040910656.

The spelling of 61071793 in words is "sixty-one million, seventy-one thousand, seven hundred ninety-three".