67899317 has 4 divisors (see below), whose sum is σ = 68065740. Its totient is φ = 67732896.

The previous prime is 67899313. The next prime is 67899319. The reversal of 67899317 is 71399876.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 44609041 + 23290276 = 6679^2 + 4826^2 .

It is a cyclic number.

It is not a de Polignac number, because 67899317 - 2² = 67899313 is a prime.

It is a super-2 number, since 2×67899317² = 9220634498132978, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67899313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82598 + ... + 83415.

It is an arithmetic number, because the mean of its divisors is an integer number (17016435).

Almost surely, 2^67899317 is an apocalyptic number.

It is an amenable number.

67899317 is a deficient number, since it is larger than the sum of its proper divisors (166423).

67899317 is a wasteful number, since it uses less digits than its factorization.

67899317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166422.

The product of its digits is 571536, while the sum is 50.

The square root of 67899317 is about 8240.1041862345. The cubic root of 67899317 is about 407.9639630000.

The spelling of 67899317 in words is "sixty-seven million, eight hundred ninety-nine thousand, three hundred seventeen".