67333997 has 2 divisors, whose sum is σ = 67333998. Its totient is φ = 67333996.

The previous prime is 67333961. The next prime is 67334011. The reversal of 67333997 is 79933376.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64818601 + 2515396 = 8051^2 + 1586^2 .

It is a cyclic number.

It is not a de Polignac number, because 67333997 - 2⁶ = 67333933 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67333697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33666998 + 33666999.

It is an arithmetic number, because the mean of its divisors is an integer number (33666999).

Almost surely, 2^67333997 is an apocalyptic number.

It is an amenable number.

67333997 is a deficient number, since it is larger than the sum of its proper divisors (1).

67333997 is an equidigital number, since it uses as much as digits as its factorization.

67333997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 642978, while the sum is 47.

The square root of 67333997 is about 8205.7295227176. The cubic root of 67333997 is about 406.8285896287.

The spelling of 67333997 in words is "sixty-seven million, three hundred thirty-three thousand, nine hundred ninety-seven".