67677381 has 12 divisors (see below), whose sum is σ = 98148960. Its totient is φ = 44937000.

The previous prime is 67677377. The next prime is 67677397. The reversal of 67677381 is 18377676.

It is a happy number.

It is not a de Polignac number, because 67677381 - 2² = 67677377 is a prime.

It is a super-2 number, since 2×67677381² = 9160455798038322, which contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67677301) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12721 + ... + 17238.

It is an arithmetic number, because the mean of its divisors is an integer number (8179080).

Almost surely, 2^67677381 is an apocalyptic number.

It is an amenable number.

67677381 is a deficient number, since it is larger than the sum of its proper divisors (30471579).

67677381 is a wasteful number, since it uses less digits than its factorization.

67677381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30216 (or 30213 counting only the distinct ones).

The product of its digits is 296352, while the sum is 45.

The square root of 67677381 is about 8226.6263437694. The cubic root of 67677381 is about 407.5189869081.

The spelling of 67677381 in words is "sixty-seven million, six hundred seventy-seven thousand, three hundred eighty-one".