61775641 has 8 divisors (see below), whose sum is σ = 62532800. Its totient is φ = 61022160.

The previous prime is 61775639. The next prime is 61775647. The reversal of 61775641 is 14657716.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61775641 - 2¹ = 61775639 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 61775641.

It is not an unprimeable number, because it can be changed into a prime (61775647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47206 + ... + 48496.

It is an arithmetic number, because the mean of its divisors is an integer number (7816600).

Almost surely, 2^61775641 is an apocalyptic number.

It is an amenable number.

61775641 is a deficient number, since it is larger than the sum of its proper divisors (757159).

61775641 is a wasteful number, since it uses less digits than its factorization.

61775641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1839.

The product of its digits is 35280, while the sum is 37.

The square root of 61775641 is about 7859.7481511814. The cubic root of 61775641 is about 395.3111707090.

The spelling of 61775641 in words is "sixty-one million, seven hundred seventy-five thousand, six hundred forty-one".