67772987 has 2 divisors, whose sum is σ = 67772988. Its totient is φ = 67772986.

The previous prime is 67772983. The next prime is 67773007. The reversal of 67772987 is 78927776.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 67772987 - 2² = 67772983 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (67772983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33886493 + 33886494.

It is an arithmetic number, because the mean of its divisors is an integer number (33886494).

Almost surely, 2^67772987 is an apocalyptic number.

67772987 is a deficient number, since it is larger than the sum of its proper divisors (1).

67772987 is an equidigital number, since it uses as much as digits as its factorization.

67772987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2074464, while the sum is 53.

The square root of 67772987 is about 8232.4350589604. The cubic root of 67772987 is about 407.7107936219.

The spelling of 67772987 in words is "sixty-seven million, seven hundred seventy-two thousand, nine hundred eighty-seven".