67687361 has 4 divisors (see below), whose sum is σ = 77356992. Its totient is φ = 58017732.

The previous prime is 67687357. The next prime is 67687381. The reversal of 67687361 is 16378676.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 67687361 - 2² = 67687357 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67687331) 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, 4834805 + ... + 4834818.

It is an arithmetic number, because the mean of its divisors is an integer number (19339248).

Almost surely, 2^67687361 is an apocalyptic number.

It is an amenable number.

67687361 is a deficient number, since it is larger than the sum of its proper divisors (9669631).

67687361 is an equidigital number, since it uses as much as digits as its factorization.

67687361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9669630.

The product of its digits is 254016, while the sum is 44.

The square root of 67687361 is about 8227.2328884018. The cubic root of 67687361 is about 407.5390174290.

The spelling of 67687361 in words is "sixty-seven million, six hundred eighty-seven thousand, three hundred sixty-one".