61661127 has 8 divisors (see below), whose sum is σ = 89688960. Its totient is φ = 37370360.

The previous prime is 61661123. The next prime is 61661153. The reversal of 61661127 is 72116616.

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 61661127 - 2² = 61661123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61661094 and 61661103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61661123) 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, 934227 + ... + 934292.

It is an arithmetic number, because the mean of its divisors is an integer number (11211120).

Almost surely, 2^61661127 is an apocalyptic number.

61661127 is a deficient number, since it is larger than the sum of its proper divisors (28027833).

61661127 is a wasteful number, since it uses less digits than its factorization.

61661127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1868533.

The product of its digits is 3024, while the sum is 30.

The square root of 61661127 is about 7852.4599330401. The cubic root of 61661127 is about 395.0667557954.

The spelling of 61661127 in words is "sixty-one million, six hundred sixty-one thousand, one hundred twenty-seven".