67216377 has 4 divisors (see below), whose sum is σ = 89621840. Its totient is φ = 44810916.

The previous prime is 67216361. The next prime is 67216379. The reversal of 67216377 is 77361276.

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 not a de Polignac number, because 67216377 - 2⁴ = 67216361 is a prime.

It is a super-2 number, since 2×67216377² = 9036082674012258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67216379) 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, 11202727 + ... + 11202732.

It is an arithmetic number, because the mean of its divisors is an integer number (22405460).

Almost surely, 2^67216377 is an apocalyptic number.

It is an amenable number.

67216377 is a deficient number, since it is larger than the sum of its proper divisors (22405463).

67216377 is a wasteful number, since it uses less digits than its factorization.

67216377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22405462.

The product of its digits is 74088, while the sum is 39.

The square root of 67216377 is about 8198.5594466345. The cubic root of 67216377 is about 406.5915668750.

The spelling of 67216377 in words is "sixty-seven million, two hundred sixteen thousand, three hundred seventy-seven".