61011761 has 4 divisors (see below), whose sum is σ = 61028352. Its totient is φ = 60995172.

The previous prime is 61011733. The next prime is 61011767. The reversal of 61011761 is 16711016.

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 a cyclic number.

It is not a de Polignac number, because 61011761 - 2⁶ = 61011697 is a prime.

It is a super-2 number, since 2×61011761² = 7444869960642242, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61011767) 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, 41 + ... + 11046.

It is an arithmetic number, because the mean of its divisors is an integer number (15257088).

Almost surely, 2^61011761 is an apocalyptic number.

It is an amenable number.

61011761 is a deficient number, since it is larger than the sum of its proper divisors (16591).

61011761 is a wasteful number, since it uses less digits than its factorization.

61011761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16590.

The product of its (nonzero) digits is 252, while the sum is 23.

The square root of 61011761 is about 7811.0025604912. The cubic root of 61011761 is about 393.6750156699.

Adding to 61011761 its reverse (16711016), we get a palindrome (77722777).

The spelling of 61011761 in words is "sixty-one million, eleven thousand, seven hundred sixty-one".