67801397 has 2 divisors, whose sum is σ = 67801398. Its totient is φ = 67801396.

The previous prime is 67801381. The next prime is 67801399. The reversal of 67801397 is 79310876.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56685841 + 11115556 = 7529^2 + 3334^2 .

It is a cyclic number.

It is not a de Polignac number, because 67801397 - 2⁴ = 67801381 is a prime.

Together with 67801399, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67801399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33900698 + 33900699.

It is an arithmetic number, because the mean of its divisors is an integer number (33900699).

Almost surely, 2^67801397 is an apocalyptic number.

It is an amenable number.

67801397 is a deficient number, since it is larger than the sum of its proper divisors (1).

67801397 is an equidigital number, since it uses as much as digits as its factorization.

67801397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 67801397 is about 8234.1603700681. The cubic root of 67801397 is about 407.7677555769.

The spelling of 67801397 in words is "sixty-seven million, eight hundred one thousand, three hundred ninety-seven".