61934987 has 2 divisors, whose sum is σ = 61934988. Its totient is φ = 61934986.

The previous prime is 61934959. The next prime is 61935023. The reversal of 61934987 is 78943916.

61934987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61934987 - 2⁸ = 61934731 is a prime.

It is a super-2 number, since 2×61934987² = 7671885229380338, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (61934087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30967493 + 30967494.

It is an arithmetic number, because the mean of its divisors is an integer number (30967494).

Almost surely, 2^61934987 is an apocalyptic number.

61934987 is a deficient number, since it is larger than the sum of its proper divisors (1).

61934987 is an equidigital number, since it uses as much as digits as its factorization.

61934987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 47.

The square root of 61934987 is about 7869.8784615774. The cubic root of 61934987 is about 395.6507715060.

The spelling of 61934987 in words is "sixty-one million, nine hundred thirty-four thousand, nine hundred eighty-seven".