214975987 has 2 divisors, whose sum is σ = 214975988. Its totient is φ = 214975986.

The previous prime is 214975961. The next prime is 214976011. The reversal of 214975987 is 789579412.

214975987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-214975987 is a prime.

It is not a weakly prime, because it can be changed into another prime (214975907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107487993 + 107487994.

It is an arithmetic number, because the mean of its divisors is an integer number (107487994).

Almost surely, 2^214975987 is an apocalyptic number.

214975987 is a deficient number, since it is larger than the sum of its proper divisors (1).

214975987 is an equidigital number, since it uses as much as digits as its factorization.

214975987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1270080, while the sum is 52.

The square root of 214975987 is about 14662.0594392466. The cubic root of 214975987 is about 599.0503375098.

The spelling of 214975987 in words is "two hundred fourteen million, nine hundred seventy-five thousand, nine hundred eighty-seven".