61327287 has 20 divisors (see below), whose sum is σ = 104700816. Its totient is φ = 35043840.

The previous prime is 61327261. The next prime is 61327297. The reversal of 61327287 is 78272316.

It is not a de Polignac number, because 61327287 - 2¹² = 61323191 is a prime.

It is a super-2 number, since 2×61327287² = 7522072261560738, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61327237) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 53514 + ... + 54647.

Almost surely, 2^61327287 is an apocalyptic number.

61327287 is a deficient number, since it is larger than the sum of its proper divisors (43373529).

61327287 is a wasteful number, since it uses less digits than its factorization.

61327287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108180 (or 108171 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The square root of 61327287 is about 7831.1740499110. The cubic root of 61327287 is about 394.3524871722.

The spelling of 61327287 in words is "sixty-one million, three hundred twenty-seven thousand, two hundred eighty-seven".