67768893 has 30 divisors (see below), whose sum is σ = 103294554. Its totient is φ = 44276544.

The previous prime is 67768891. The next prime is 67768907. The reversal of 67768893 is 39886776.

It can be written as a sum of positive squares in 3 ways, for example, as 8139609 + 59629284 = 2853^2 + 7722^2 .

It is not a de Polignac number, because 67768893 - 2¹ = 67768891 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67768891) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 431571 + ... + 431727.

Almost surely, 2^67768893 is an apocalyptic number.

It is an amenable number.

67768893 is a deficient number, since it is larger than the sum of its proper divisors (35525661).

67768893 is an equidigital number, since it uses as much as digits as its factorization.

67768893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315 (or 233 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 54.

The square root of 67768893 is about 8232.1864045951. The cubic root of 67768893 is about 407.7025838534.

The spelling of 67768893 in words is "sixty-seven million, seven hundred sixty-eight thousand, eight hundred ninety-three".