61444727 has 6 divisors (see below), whose sum is σ = 64849248. Its totient is φ = 58210452.

The previous prime is 61444723. The next prime is 61444741. The reversal of 61444727 is 72744416.

It is not a de Polignac number, because 61444727 - 2² = 61444723 is a prime.

It is a super-2 number, since 2×61444727² = 7550908952209058, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61444723) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 84743 + ... + 85464.

It is an arithmetic number, because the mean of its divisors is an integer number (10808208).

Almost surely, 2^61444727 is an apocalyptic number.

61444727 is a deficient number, since it is larger than the sum of its proper divisors (3404521).

61444727 is a wasteful number, since it uses less digits than its factorization.

61444727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170245 (or 170226 counting only the distinct ones).

The product of its digits is 37632, while the sum is 35.

The square root of 61444727 is about 7838.6687007425. The cubic root of 61444727 is about 394.6040512379.

The spelling of 61444727 in words is "sixty-one million, four hundred forty-four thousand, seven hundred twenty-seven".