61446887 has 2 divisors, whose sum is σ = 61446888. Its totient is φ = 61446886.

The previous prime is 61446821. The next prime is 61446923. The reversal of 61446887 is 78864416.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61446887 - 2¹² = 61442791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61446487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30723443 + 30723444.

It is an arithmetic number, because the mean of its divisors is an integer number (30723444).

Almost surely, 2^61446887 is an apocalyptic number.

61446887 is a deficient number, since it is larger than the sum of its proper divisors (1).

61446887 is an equidigital number, since it uses as much as digits as its factorization.

61446887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 258048, while the sum is 44.

The square root of 61446887 is about 7838.8064780297. The cubic root of 61446887 is about 394.6086750942.

It can be divided in two parts, 6144 and 6887, that added together give a palindrome (13031).

The spelling of 61446887 in words is "sixty-one million, four hundred forty-six thousand, eight hundred eighty-seven".